How fast is the speed of light?
In a vacuum, the speed of light is 299,792,458 metres per
second, but it can change. In a prism, light can almost be stopped, while
outside of a vacuum, light does not travel as fast, slowed down by numerous
particles in the air. Sound, however, travels faster where there are more
particles, as that is a wave that relies on particles to move, while light is a
wave that does not.
What is the difference between dynamite and TNT?
TNT is not the chemical name for dynamite, nor has dynamite
got anything to do with TNT at all. Dynamite is stabilised nitroglycerine
wrapped in a cylinder, developed by Alfred Nobel, who later created the fund
for the Nobel Prize after feeling guilty about having developed an explosive
which was later used in warfare. TNT is an abbreviation of trinitrotoluene,
another explosive which is less powerful yet safer to work with than dynamite.
However, it has proved to be toxic, causing yellow colouration of skin. This is
what caused the female workers in munitions factories to have yellow skin,
leading to the nickname 'Canary Girls'. It can also cause organ damage and
increased risk of cancer.
What is radar?
Radar, standing for radio detection and ranging, is a device
that allows users to detect objects by bouncing radio waves off objects. Its
most famous usage was during World War II, when the government spread the
rumour that ace pilots were aided in seeing in the dark by carrots, to distract
the Germans from the possibility of radar. This mistruth has persisted to this
day, although it is true that carrots contain a vitamin necessary for quickly
switching between normal vision and night vision, but there is a difference
between a lack of something causing damage and an excess of something causing
good.
-PWN-
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