Did you know that an American Scientist has accidentally developed sunglasses that could correct Color Blindness? These glasses were originally made for laser surgeons to keep their eyes protected and differentiate between blood and tissue during surgery and it wasn’t until they wore it outdoors they have discovered that it could also correct colorblindness.
Rails get heated in two ways. One way is due to the heat of the sun during the day time and the other is due to the friction caused by running of trains. This heat makes the rails expand, and since they are very lengthy, it makes the rails to expand even more. So if there’s no space in between the rails to accommodate this extra length, the rails tend to push against each other and bend, making it unfit for trains to run.
If you have observed well enough, you would’ve seen there’s a small gap left at the joint between two rails. Why do think it’s designed that way?
Did you know there’s a type of fish called “Arapaima” that has lungs and breathes air? They are one of the largest freshwater fish and can grow up to 10 feet long.
After numerous plans and efforts, a team of scientists has taken the first real step to bring back the extinct woolly mammoth from the dead. In this process, the DNA fragments extracted from frozen remains of a long dead Mammoth has been implanted into elephant cells that have been isolated in a petri dish. Although these cells are functioning perfectly up to this point, the team says they have a lot to figure out if they want to replicate the process using elephant eggs.
Using nothing more than Newton’s laws of gravitation, astronomers confidently predict that several billion years from now, our home galaxy, the Milky Way, will merge with our neighboring galaxy Andromeda. But don’t worry! Even if life would still exist on Earth by that time it will probably be safe. Because it’s unlikely that many collusions would happen among the planets, since the distances between planets are very high.
Teeth enamel contains Calcium Hydroxyapatite. When we use Fluoride containing toothpastes, Fluoride reacts with the above mentioned substance and makes Calcium Fluorapatite which is a much stronger substance, like a hard coating around teeth. It also has a better ability to withstand acids produced by bacteria, making it tough for cavities to form. Fluoride is also helpful in refilling early stage cavities.
Why do most toothpastes contain fluoride?
Engineers have succeeded in making a plane fueled only with solar power. Yes, not a single drop of fossil fuel! This plane, with a wingspan wider than a Boeing 747, has its wings tiled with solar cells that transfer solar energy to four electrical motors that power the plane’s propellers.
New discoveries suggest that there could be alien life on Mars after all! Researchers have found that Mars had 20% of itself covered with a sea of water 4.5 billion years ago! 87% of this water has evaporated with time. According to analyses, water has been on Mars for a longer period than on Earth so scientists say that there has been enough time for life to begin and evolve on Mars.
Did you know that a scientist has made a breakthrough in science by developing an artificial leaf that’s able to photosynthesize and produce oxygen? This leaves are made with chloroplasts extracted from real leaves and suspended in a medium of proteins. These leaves are planned to be used in long-distance space journeys as an Oxygen source.
In a food chain, carnivores come after herbivores. Therefore carnivores get less energy than herbivores. As a solution carnivores should hunt often. But hunting is a process where it takes a lot of energy and strength therefore carnivores don’t always succeed in catching enough prey as they are required. As a result the energy consumption of carnivores is always lower than that of herbivores, resulting them to have smaller bodies. Scientists also believe that they have evolved with a smaller body size to make it efficient when they hunt. Furthermore, another theory suggests that herbivores have larger bodies because they have longer and larger intestinal organs than carnivores.
Why are most herbivorous mammals bigger in size than carnivorous mammals?
Scientists have made a wondrous discovery that a potato boiled for eight minutes can make for a battery that produces ten times the power of a raw one and significantly cheaper. They have made this battery by using a copper cathode and a zinc anode partly sunk in the boiled potato.
Did you know that a creature called “Tardigrade”, less than a millimeter long, is known as the toughest creature on earth? It has managed to survive all five mass extinctions in the history due to their ability to dry out completely in extreme conditions, replacing almost of the water in their bodies with a sugar called Trehalose.
Do you know that Saturn’s biggest moon, Titan, is the only other place in the solar system where it ever rains? But unlike on earth, on Titan, the seas and the rain are made not of water but of methane and ethane.
The skin around a healing wound is very thin; therefore the nerve endings are more sensitive than other parts of the skin. At this healing stage, cells begin to proliferate and contract to pull the wound close, creating a mechanical stress. This causes the nerve endings to stimulate, ultimately giving an itching sensation.
Why do wounds itch when they heal?
Have you ever wondered how a sunscreen gets the ability to absorb health hazardous UV rays in the sunlight? Sunscreen has achieved this ability due to the nano particles of TiO2 and ZnO2 that it contains.
Did you know that there are a species of hornets (Vespa orientalis) that are partly solar powered? Researchers have found that there are “solar cells” in these insects that covert sunlight into useful energy.
Coffee contains a chemical compound called caffeine which has a similar chemical structure to a naturally occurring compound in our body called adenosine. Adenosine is what causes our sleepiness, by bonding with the adenosine receptors in the brain. When caffeine is consumed, it bonds with almost all the adenosine receptors in the brain, instead of adenosine. Unlike adenosine, caffeine does not slow down the nerve cell activity and therefore it does not cause any drowsiness. In addition, caffeine causes the hormone adrenalin to secrete which gives your body an energy boost.