Friday, April 22, 2011

Trees are important components of the natural landscape and a wonderful living organism which gives shelter, food, warmth and protection to all living things. Though common trees are fascinating immensely but there are some of the more unusual and amazing tree specimens found in the world which is weird and spectacular, yet people are hardly aware of their mysterious properties, strange sizes or unusual shapes. Here are some which top the list of being the strangest trees found on the planet. It’s a treat to the eye!
Axel Erlandson’s passion for sculpting trees, also known as arborsculpture, led him to open a horticulture attraction in 1947 near Santa Cruz, California named The Circus Tree and people flocked in from all over the country to view his strange and striking creations which are nothing short of breathtaking! Using a special set of skills, Erlandson started to sculpt things out of living, growing trees. One such tree is the famous “Basket Tree”. which is actually six Sycamores grafted together in 42 different connections to give it its basket shape.
It’s the largest cashew tree in the world and more like a root and bush than a tree covering a span of 8,500 square meters alone! This tree is probably 300 feet by 300 feet in total. It looks like a forest and a bears 8000 fruit in a year .This picture doesn’t do it justice but should give you an idea of the enormity.
The Tree of Life in Bahrain is one of the mysteries of world which is bound to be in the list of most unusual trees aroung the globe! This four century old mesquite tree survives in the midst of desert without availability of water. The mystery of the survival of the tree has made it a legend and the name “tree of life” is absolutely appropriate for the tree, truly representing the magic of life. A legend is also attached to the site where the tree is located. The local inhabitants believe with heart and soul that this was the actual location of the Garden of Eden.
Next is the Chapel Tree one of the most famous trees in France – actually, it’s more than just a tree: it’s a building and a religious monument all in one. In 1669, l’Abbe du Detroit and du Cerceau decided to build a chapel in (at that time) a 500 years old or so oak tree made hollow by a lightning bolt. Now, parts of the tree are dead, the crown keeps becoming smaller and smaller every year, and parts of the tree’s bark, which fell off due to old age, are covered by protective oak shingles. As a symbol, however, it seems that the Chapel-Oak of Allouville-Bellefosse may live on forever.
Baobabs, with their distinctive shape, are one of the most charismatic group of trees in the world. This particular specimen, located in Madagascar, is referred to as the ‘Teapot Baobab’. These trees remain leafless for most part of the year, and their thick, bloated, fire-resistant trunks store water during the dry months. One would be surprised to find that some baobab trunks are so large that people actually reside inside them!
General Sherman is about 2500years old tree with a height of 275 feet (83.8 metres), located in the Giant Forest of Sequoia National Park in the United States. In January 2006 the largest branch on the tree broke off. The breakage, however, could not  change the General Sherman’s status as the largest tree! This stunning tree has the base of its trunk measuring about 102 feet in circumference. Witnesses to this spectacular creation of nature can only justify its stature!
Ta Prohm Temple or the Jungle Temple which is located in the Angkor Thom complex has trees growing here in the most astounding way. Words cannot describe it until you set foot there and see it for yourself. Apparently, the place was left as is over the hundreds of years and the outcome is amazing from what you see now in the place which is also called Angkor Archaeological Park. On every side, in fantastic over-scale, the trunks of the silk-cotton trees soar skywards under a shadowy green canopy, their long spreading skirts trailing the ground and their endless roots coiling more like reptiles than plants.
Mexico’s most famous tree, the ginormous Tule Tree (Arbol del Tule) grows near Oaxaca City. It may not be the largest or the oldest tree in the world, but it has no contenders for widest girth award which is abround 164 feet in circumference.It’s best not to look at the tree as a single icon. Indeed there is a family of ancient trees. Rooted in the town of Santa María del Tule, the Tule Tree and its environs comprise a unique natural monument.
The Dragon Tree is found at de los Vinos in Tenerife, one of the Canary Islands, and is said to be between 650 and 1,500 years old. This specimen inherited this name from mythical origins: Hercules had to bring back three golden apples from the garden of the Hespérides, which is guarded by Landon, the hundred-headed dragon. Hercules killed Landon and his blood flowed out over the land, which began to sprout ‘dragon’ trees. The tree exudes ‘dragon’s blood’ – a red sap – when cut.

top 10 tallest buildings of all time

Taipei 101, Taipei, Taiwan – 1671 ft (509 m) 101 Floors
Taipei 101 became the world’s tallest building to be constructed in the new millennium and the first to cross the half-kilometer mark. The construction costed $1.76 billion and was completed in 2004. This multiuse steel-and-glass skyscraper was designed by C.Y. Lee & Partners and has 61 elevators. It reflects the traditional Chinese pagoda, with a soaring podium base, eight tiers of eight storeys (eight is considered to be a number for prosperous growth in China), narrow pinnacle tower and a spire. The building has an 18 ft, 882-ton ball-shaped damper at the top that counteracts swaying during typhoons and earthquakes. Although, CTBUH only takes into consideration the floors above the ground level, there are 5 floors underground too. The number “101” also represents the mailing code of Taipei’s international business district. It has been hailed as the Seven New Wonders of the World by Newsweek magazine in 2006 and as the Seven Wonders of Engineering by Discovery Channel in 2005.
Shanghai World Financial Center – 1614 ft (492 m) 101 Floors
This super tall skyscraper in Shanghai that dominates the skyline over East China is destined to become a symbolic icon, giving the city a new status and depicts the arrival of a new era in Asia. It was designed by Kohn Pedersen Fox and officially opened its doors to the public on August 28, 2008. It is a mixed use building with excellent urban shopping malls at the base, a 174-room luxurious five-star hotel at the top and sixty-two floors filled with offices. There are three observation decks between the 94th to the 100th level. It has a total of 31 elevators and the construction cost was US $1.20 billion. The most remarkable feature of this majestic building is the aperture at the top of the building. It is the 2nd tallest building in the world.
Petronas Twin Towers – 1483 ft (452 m) 88 Floors
The beautiful world-famous Petronas Twin Towers in Kuala Lumpur, Malaysia, were constructed in 1998. The name sounds as romantic as they look together. These elegantly slender towers were once the world’s tallest before being ousted from that position by Taipei 101.
Petronas Tower 1 is the 3rd tallest building in the world.
Petronas Tower 2 is the 4th tallest building in the world.
However, they still remain the tallest twin buildings in the world. They were designed by Argentine-American architect Cesar Pelli and were built on Kuala Lumpur’s race track. The structure is made of high-strength concrete and has a curtain wall of glass and stainless steel sun shades that help diffuse the intensity of light.
The major feature of the towers is the skybridge between the towers on the 41st and 42nd floors, which is the highest 2-storey bridge in the world. Visitors are allowed on the Skyway. The skybridge is also meant to be used in case of a fire or for other emergencies.
The Sears Tower – 1451 ft (452 m) 108 Floors
Located in Chicago, Illinois, The Sears Tower was constructed in 1974, and has been the world’s tallest building, overtaking the World Trade Center. Although, it is no longer the tallest building in the world, the Sears Tower is the 5th tallest and still has the world’s highest occupiable floors, highest elevator ride and the highest roof deck. The top of the tower is the highest point in Illinois. It is said that four states can be seen from the top of the tower.
This tower was designed by architect Bruce Graham and engineer Fazlur Khan in a “bundled tube” system with nine squares, sheathed in a dark tinted glass curtain wall. The building leans a few inches due to its asymmetrical design and this can be felt occasionally. The Sears Tower has a separate tourist entrance and attracts more 1.5 million tourists each year.
Jin Mao Tower – 1380 ft (421 m) 88 Floors
The name of the landmark super-tall skyscraper, Jin Mao, literally means “Golden Prosperity Building.” Currently ranked the 6th tallest in the world, it was designed by the Chicago based Skidmore, Owings & Merrill and constructed in 1999. It is located in the Lujiazui area of the Pudong district of Shanghai, People’s Republic of China. The architecture ingeniously combines elements of traditional Chinese culture with the modern architectural styles of the time, which makes it one of the well-constructed buildings in China. The proportions of this structure revolve around the number 8, which according to Chinese belief, signifies prosperity.
It houses the very luxurious Shanghai Grand Hyatt hotel and several offices. The construction cost is estimated to be 530 million dollars. The tower has several exhibition halls, banquet halls, entertainment and an observation deck on the 88th floor that can fit about 1000 tourists. The daily maintenance of this tower is reported to be an unbelievable US$121,000.
Two International Finance Center (IFC) – 1362 ft (415 m) 88 Floors
Constructed in 2003, the IFC with its two skyscrapers overlooking the Victoria Harbor, is a prominent landmark in Hongkong, China. One International Finance Center is 38 storeys high. The Two International Finance Center, which is the world’s 7th tallest building, has 88 storeys and has been designed to house financial firms with advanced telecommunications, raised floors for better cabling and floor plans that are almost without columns. About 15,000 people can be accommodated in this building. Although, there are 88 storeys, there are some floors that are considered to be “taboo” and are not used, such as the 14th and 24th floors, as these numbers spell evil for the Chinese.
The IFC mall has an array of famous retailers and several top jewelry retailers, health& skin care and fashion houses, along with restaurants and a cinema. It is one of the few buildings in the world to be equipped with double-deck elevators.
CITIC Plaza – 1283 ft (391 m) 80 Floors
The China International Trust and Investment Company (CITIC) Plaza, built in 1997, is located in Guangzhou, in the growing Tianhe District. It was the tallest building in the world when it was built and is currently the tallest concrete building in the world. It is ranked as the fourth tallest building in China, seventh in Asia and eighth in the world. This building is part of a complex which has two other 38-storey residential buildings.
CITIC Plaza has two antennas on the top, like spires. This elegant building is surrounded by several other tall buildings and gives an indication of the increasing prosperity of Guangzhou. It is close to the Tianhe Sports Center where part of the Asia games 2010 will be held.
Shun Hing Square – 1260 ft (382 m) 69 Floors
The Shun Hing Square tower, built in 1996, is one of the world’s tallest buildings and occupies the 9th place currently. This brilliantly constructed building is in Shenzhen, China, and is said to be one of the most beautiful buildings. It has the distinction of being the tallest all-steel building in China and the fifth tallest in China. The specialty of this building is that it was built with an incredible speed of four floors in nine days. The spires on the top of the building add to the height and without them, it stands at 325 m tall.
Shun Hing Square is a complex that has an office tower and another 35-storey building for residential, office and retail purposes. The 69th floor has an observation deck called the Meridian View Center. Tourists will have to pay US$12 to go up.
Empire State Building – 1250 ft (381 m) – 102 Floors
The Empire State Building of New York, United States of America, built in 1931, is one of the oldest and most famous buildings in the world and there is certainly not a person who has not heard of it. Now rated as the 10th tallest building, it was the world’s tallest building for forty-one years, until the World Trade Center was constructed in the year 1972. After the unfortunate incident with the World Trade Center in 2001, the Empire State Building once again became the tallest building in the State of New York.
It has also been named as one of the Seven Wonders of the Modern World by the American Society of Civil Engineers. The beauty of the Empire State Building is doubled with the beautiful lights at the top of the building. In fact, the view of the building at night is considered to be a tourist attraction.
Coming Up
Standing tall among all others is another marvel, the Burj Dubai Tower in Dubai, United Arab Emirates. It is still under construction and will not be considered as the tallest building until completion in September 2009. It already has 160 storeys and overtook Taipei 101 and surpassed the KVLY-TV mast in the U.S., which is 629 m, achieving the status of being the tallest man-made structure on the planet. The eventual height remains a secret, but speculation is that it will reach 900 meters.
There may be a future magical moment in the offing. The plan for the proposed Sky City 1000 by Japan shows the height at 1000 meters and 196 floors. We’ll just have to wait and see.
Burj Dubai, Dubai, The United Arab Emirates (167 Stories)

How electric eel produces electricity.????

The electric organ discharge fish produces electric currents by a highly specialized nervous system that has the ability to adjust the activity of disk-shaped; electricity- producing cells are all put together into one functional electric organ. This organ contains electrically excitable cells called electrolytes which are received after the command signals come from the brain to "fire." As the brain "fires" the electrolytes are asymmetrically polarized acting as serially connected batteries. No matter howThe electric organ discharge fish produces electric currents by a highly specialized nervous system that has the ability to adjust the activity of disk-shaped; electricity- producing cells are all put together into one functional electric organ. This organ contains electrically excitable cells called electrolytes which are received after the command signals come from the brain to "fire." As the brain "fires" the electrolytes are asymmetrically polarized acting as serially connected batteries. No matter how far they are from the nucleus, thousands of cells are released at once. This creates a temporary path with low electrical resistance connecting the inside and the outside of cell on one side. Each cell acts like a battery with the side that is activated being negative and the opposite side being positive. The current that is generated by the activated cell shocks any inactive bystanders because the cells are adapted inside the electric organ. By doing this it sets off many of the motivations that it runs on.

Colours produced by magnetic field(Aurora Borealis)

The energy source for the aurora is 149 million kilometers (km) (93 million miles) from Earth at the sun. The sun continuously emits charged particles (mostly protons and electrons), which are the byproducts of thermonuclear reactions occurring inside the sun. These charged particles make up the solar wind, which travels away from the sun through space at speeds ranging from 300 to 1,000 km/sec.—about a million miles per hour. Traveling at this high speed, the solar particles can reach the Earth in two to three days.
Aurora Borealis AlaskaAt Earth, the steady solar wind is deflected by Earth's magnetic field, or magnetosphere. The solar wind flows around the magnetosphere much like a river flows around a stone. It also pushes on the magnetosphere and distorts it so that instead of a symmetric set of magnetic field lines—like one might have around a bar magnet—the magnetosphere is stretched and elongated into a comet shape with a long tail trailing away from Earth on the side away from the sun.
When there is a disturbance on the sun, such as a solar flare or coronal mass ejection, it can produce a disturbance in the solar wind. This in turn will cause a disturbance in the balance between the solar wind and Earth's magnetic field. As a result, electrons and protons are accelerated within the magnetosphere. These charged particles are constrained to the magnetic field lines much like beads on a wire. The accelerated particles will travel down the magnetic field lines of Earth and collide with the atoms 
andmolecules of the upper atmosphere where the magnetic field lines reach down to surface of the Earth near the north and south magnetic poles.
When the particles from the magnetosphere collide with the atoms and molecules of the atmosphere, the particle's energy can be transferred to the atoms and molecules (typically O, N, and N2) of the atmosphere forming excited states of O, N and N2. When these finally release their energy and return to their normal ground state, they give up energy in the form of light. This is the light that we see from the ground as an aurora.

What do the Northern Lights look like?

The aurora has a variety of shapes, colors, and structures, and can also change rapidly in time. During a typical night, the aurora often starts as a single long arc that stretches from horizon to horizon in a generally east-west direction. Near midnight, the arc may begin to brighten. Then curls or waves may start to form along the arc. It may also start to have vertical structures that look like thin tall rays of light. Then, just about midnight, the whole sky may become filled with bands and rays that move rapidly from horizon to horizon. This heightened activity can last anywhere from a few minutes to several hours. As dawn approaches the aurora will typically quiet down and form wispy quiet patches that can last until morning. While this may be a typical night of aurora, any number of variations on this theme may occur.

The physics of Auroral light formation

The high-energy electrons and protons traveling down Earth's magnetic field lines collide with the atmosphere (i.e., oxygen andnitrogen atoms and molecules). The collisions can excite the atmospheric atom or molecule or they can strip the atmospheric species of its own electron and create an ion. The result is that the atmospheric atoms and molecules are excited to higher energy states. They relinquish this energy in the form of light upon returning to their initial, lower energy state. The particular colors we see in an auroral display depend on the specific atmospheric gas struck by energetic particles, and the energy level to which it is excited. The two main atmospheric gases involved in the production of auroral lights are oxygen and nitrogen:
  • Oxygen is responsible for two primary auroral colors: green-yellow wavelength of 557.7 nanometers (nm) is most common, while the deep red 630.0 nm light is seen less frequently.
  • Nitrogen in an ionized state will produce blue light, while neutral nitrogen molecules create purplish-red auroral colors. For example, nitrogen is often responsible for the purplish-red lower borders and rippled edges of the aurora.
The process is similar to the lights that illuminate a neon light or computer and TV screens. In a neon light, neon gas is excited byelectrical currents. Likewise, in a picture or computer screen, a beam of electrons controlled by electric and magnetic fields strike the screen, making it glow in different colors, according to the type of chemicals (phosphors) that coat the screen.
Auroras typically occur between 95 and 1,000 km. Auroras stay above 95 km because at that altitude the atmosphere is so dense (and the auroral particles collide so often) that they finally come to rest at this altitude. On the other hand, auroras typically do not reach higher than 500-1,000 km because at that altitude the atmosphere is too thin to cause a significant number of collisions with the incoming particles.

When do they occur?

The aurora is a near daily occurrence somewhere on Earth and there is almost always an aurora in the sky (both day and night, but in the daytime it is out-shined by sunlight). However, the following factors can increase your chance of seeing them:
  • Time of Day: Because the intensity of the light in an aurora is low, it can only be seen at night. Furthermore, the most active and brilliant displays usually occur near midnight. Therefore, the best time to observe the aurora is, on average, between 11 p.m. and 2 a.m.
  • Season: In the northern hemisphere, the best time to view an aurora is during the winter. At latitudes where auroras are common, it is typically light all night in the summer—so you rarely have warm weather and a good aurora. Furthermore, in most polar regions, the weather tends to be clear during the middle of winter—so often the best time to see an aurora is also the coldest.
  • Sun Rotation: It takes the sun 27 days to rotate one time around its axis, so 27 days after an aurora display, the active region on the sun that caused the aurora will face Earth again. Although solar activity in that region on the sun might have decreased in the mean time, there is still a greater chance of aurora 27 days after the last period of increased auroral activity.
  • Solar Activity: Auroral activity also correlates with the activity of the sun, which changes according to an 11-year solar cycle. In general, the more active the sun, the greater the number of auroras. Thus, auroral displays are more likely around the time of the solar maximum (when solar activity is high). Aurora displays remain frequent and strong for several years around solar maximum. During solar maximum, the auroras are not only more frequent and more active, but they also can come further south away from the poles (it should be noted, however, that bright and active auroras can be observed at any time during the solar cycle).
Weather, the full moon, and light pollution also affect your ability to see aurora. Your best bet for seeing aurora is to get as close as you can to the position of the auroral oval, and as far away as you can from sources of artificial light and overcast skies. Tips on viewing the aurora can be found at NOAA's Space Environment Center.

Where do they occur?

Auroras form in an oval band centered at each magnetic pole. The width of the band ranges from 10 to 1,000 kilometers (km) and it is approximately 3,000 km (1,900 miles) from the magnetic pole during quieter solar periods. If you live near this oval, you will see the aurora on most clear, dark nights. In the northern hemisphere, for example, prime viewing locations include Fairbanks, Alaska, many locations in northern and middle Canada, and in the northern parts of Russia and 
As auroral activity increases, the aurora not only increases in brightness, but it also tends to move further towards the equator. Auroral activity is directly linked to disturbances in Earth's magnetic and electrical current system. These increases in activity are known as geomagnetic storms. To determine how high the geomagnetic activity needs to be for aurora to occur in your area, see the table at NOAA's Space Environment Center. People in the northern United States and northern Europe may see the aurora a few times in a decade, while people in southern Europe, the southern United States, and even Mexico, may see the aurora only once-in-a-lifetime. It should be noted that the auroral oval does not follow lines of equal latitude, so people on the East Coast of the United States have a higher likelihood of seeing aurora than those at the same latitude on the West Coast.
Geomagnetic storms and the resulting auroral activity, vary unpredictably throughout the year. Because geomagnetic activity often results from events on the sun, it can be predicted by looking at the sun and solar flares. For this reason, auroral forecasts can only be made two or three days in advance. NOAA's Space Environment Center issues forecasts of geomagnetic activity. Since 1979, NOAA's polar-orbiting satellites have been measuring the energy flux of particles into the auroral zones.

WHY the earth won't end in 2012

These are the answers given by the NASA students OF USA

Remember the Y2K scare? It came and went without much of a whimper because of adequate planning and analysis of the situation. Impressive movie special effects aside, Dec. 21, 2012, won't be the end of the world as we know. It will, however, be another winter solstice.

Much like Y2K, 2012 has been analyzed and the science of the end of the Earth thoroughly studied. Contrary to some of the common beliefs out there, the science behind the end of the world quickly unravels when pinned down to the 2012 timeline. Below, NASA Scientists answer several questions that we're frequently asked regarding 2012.

Question (Q): Are there any threats to the Earth in 2012? Many Internet websites say the world will end in December 2012.
Answer (A): Nothing bad will happen to the Earth in 2012. Our planet has been getting along just fine for more than 4 billion years, and credible scientists worldwide know of no threat associated with 2012.

Q: What is the origin of the prediction that the world will end in 2012?
A: The story started with claims that Nibiru, a supposed planet discovered by the Sumerians, is headed toward Earth. This catastrophe was initially predicted for May 2003, but when nothing happened the doomsday date was moved forward to December 2012. Then these two fables were linked to the end of one of the cycles in the ancient Mayan calendar at the winter solstice in 2012 -- hence the predicted doomsday date of December 21, 2012.

Q: Does the Mayan calendar end in December 2012?
A: Just as the calendar you have on your kitchen wall does not cease to exist after December 31, the Mayan calendar does not cease to exist on December 21, 2012. This date is the end of the Mayan long-count period but then -- just as your calendar begins again on January 1 -- another long-count period begins for the Mayan calendar.

Q: Could a phenomena occur where planets align in a way that impacts Earth?
A: There are no planetary alignments in the next few decades, Earth will not cross the galactic plane in 2012, and even if these alignments were to occur, their effects on the Earth would be negligible. Each December the Earth and sun align with the approximate center of the Milky Way Galaxy but that is an annual event of no consequence.

"There apparently is a great deal of interest in celestial bodies, and their locations and trajectories at the end of the calendar year 2012. Now, I for one love a good book or movie as much as the next guy. But the stuff flying around through cyberspace, TV and the movies is not based on science. There is even a fake NASA news release out there..."
- Don Yeomans, NASA senior research scientist
Q: Is there a planet or brown dwarf called Nibiru or Planet X or Eris that is approaching the Earth and threatening our planet with widespread destruction?
A: Nibiru and other stories about wayward planets are an Internet hoax. There is no factual basis for these claims. If Nibiru or Planet X were real and headed for an encounter with the Earth in 2012, astronomers would have been tracking it for at least the past decade, and it would be visible by now to the naked eye. Obviously, it does not exist. Eris is real, but it is a dwarf planet similar to Pluto that will remain in the outer solar system; the closest it can come to Earth is about 4 billion miles.

Q: What is the polar shift theory? Is it true that the earth’s crust does a 180-degree rotation around the core in a matter of days if not hours?
A: A reversal in the rotation of Earth is impossible. There are slow movements of the continents (for example Antarctica was near the equator hundreds of millions of years ago), but that is irrelevant to claims of reversal of the rotational poles. However, many of the disaster websites pull a bait-and-shift to fool people. They claim a relationship between the rotation and the magnetic polarity of Earth, which does change irregularly, with a magnetic reversal taking place every 400,000 years on average. As far as we know, such a magnetic reversal doesn’t cause any harm to life on Earth. A magnetic reversal is very unlikely to happen in the next few millennia, anyway.

The Blue Marble: Next GenerationEarth, as seen in the Blue Marble: Next Generation collection of images, showing the color of the planet's surface in high resolution. This image shows South America from September 2004.Q: Is the Earth in danger of being hit by a meteor in 2012?
A: The Earth has always been subject to impacts by comets and asteroids, although big hits are very rare. The last big impact was 65 million years ago, and that led to the extinction of the dinosaurs. Today NASA astronomers are carrying out a survey called the Spaceguard Survey to find any large near-Earth asteroids long before they hit. We have already determined that there are no threatening asteroids as large as the one that killed the dinosaurs. All this work is done openly with the discoveries posted every day on the NASA NEO Program Office website, so you can see for yourself that nothing is predicted to hit in 2012.

Q: How do NASA scientists feel about claims of pending doomsday?
A: For any claims of disaster or dramatic changes in 2012, where is the science? Where is the evidence? There is none, and for all the fictional assertions, whether they are made in books, movies, documentaries or over the Internet, we cannot change that simple fact. There is no credible evidence for any of the assertions made in support of unusual events taking place in December 2012.

Q: Is there a danger from giant solar storms predicted for 2012?
A: Solar activity has a regular cycle, with peaks approximately every 11 years. Near these activity peaks, solar flares can cause some interruption of satellite communications, although engineers are learning how to build electronics that are protected against most solar storms. But there is no special risk associated with 2012. The next solar maximum will occur in the 2012-2014 time frame and is predicted to be an average solar cycle, no different than previous cycles throughout history.

And for additional information

  • NASA Astrobiology Institute: "Nibiru and Doomsday 2012"

  • Bad Astronomy: "The Planet X Saga: The Scientific Arguments in a Nutshell"

  • Sky and Telescope Magazine: "2012: The Great Scare"

  • Why does helium change your voice?

    It is found that sound travels faster in helium gas than in the air. The sound waves are known to attain shorter wavelengths and a higher frequency when they pass from helium to air. This makes the sound higher. The other reason for hearing a change in your voice when Hhelium passes through is that the vocal folds vibrate with a higher speed in helium than in air, as helium is lighter than air. Also, helium does not restrict the movement of the folds much, while air causes more restriction.
    It is explained that breathing in helium will not change the pitch or frequency of your voice. The change in the resonance of the voice tract will make the voice passing through helium change. The resonance vibrations are more, and they affect the timbre of the voice. So it is noticed that the timbre of the voice will not be affected by helium....
    we can see a man who is blowing a balloon wich is filled with helium and his voice will change due to the above reason