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Posted by on Jul 15, 2017 in TellMeWhy |

What Are Gamma Rays?

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 radioactive decay. In 1899 the...

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Posted by on Jul 7, 2017 in TellMeWhy |

What Is Radar?

What Is Radar?

Radar, or radiolocation, as it was called in the early days, is the use of radio waves to find the whereabouts of aircraft or ships. Electromagnetic waves, which...

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Posted by on Jul 7, 2016 in TellMeWhy |

Who Invented Radar?

Who Invented Radar?

Heinrich Hertz in Germany calculated that an electric current swinging very rapidly back and forth in a conducting wire would radiate electromagnetic waves into the...

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