Who Invented the Jet Engine?
The first flight by a jet-propelled aircraft was made in Germany on august 27, 1939. Its engine was designed by Hans-Joachim von Ohain, who
TellMeWhy
A wonderful and marvelous collection of answers to intriguing questions everyone ask about the world covering almost every subject, from science and history to art, language, mathematics, technology, and homeschooling
Where Was Morse Code First Used?
The first message in Morse code was tapped out in the United States over a telegraph line from Baltimore to Washington by Samuel F. B. Morse
What Are Gamma Rays?
Gamma rays are streams of electromagnetic waves. They are given off from elements such as radium, when they undergo a process known as radio
Why Is Pollution a Problem?
Pollution is a problem because man, in an increasingly populated and industrialized world, is upsetting the environment in which he lives. M
When Does an Atom Split?
An atom splits when it is struck by a neutron. The nucleus of the atom then breaks into two roughly equal parts and, at the same time, shoot