The robot. Puma, built in Switzerland in the 70s is the most widely used robot in industries and laboratories around the world.
The first atom bomb, code named 'little boy,' dropped on Hiroshima (Japan) by the USA, had an equivalent of 15 tonnes of TNT, length of 3.04 m and weighed 4080 kg.
Radio waves from space were discovered by Karl Jarnsky in 1931. The biggest radio telescope is in New Mexico (USA), called the Very Large Array (VLA). It has 27 dishes, each measuring 25 m across
At high speeds, friction or rubbing with air causes tremendous heat. Therefore, the fast planes have an outer covering of titanium steel to withstand very high temperatures.
Diamond, made of pure carbon when heated very strongly burns just as a coal and disappears.
The USA won all the 3 medal's 200 m on the track, and the won all the 3 Medals in women's long in the field of Athens Olympics.
Marie Curie, the Nobel laureate who discovered the nature of radioactivity and Radium - more radioactive than uranium, died in 1934 because of the effects of her exposure to radioactive materials, the danger of which were unknown at that time.
Gas lasers such as argon lasers, give a lower powered beam and suitable for delicate work such as eye surgery.
At 3410°C, Tungsten has the highest melting point of any metal. Mercury is the only metal that is liquid at normal temperature, it melts at-38.87°C.
Just 3 kg of uranium fuel is capable of providing enough energy for a city of one million people for a day.
