Balsa wood is classified as a hard wood!
41
A cesium atom in an atomic clock beats over nine billion times a second.
43
Sound at the right vibration can bore holes through a solid object.
134
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Sound travels about 4 times faster in water than in air.
408
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9