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Chemistry: 4.6 Electromagnetic Spectrum 79 Views
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Description:
Today's video is about a surfer trying to go faster than the speed of light. Seriously. Spoiler alert, though: he doesn't. Oh, and we'll also teach you about the electromagnetic spectrum.
Transcript
- 00:00
Thank you We sneak world champion surfer tristan keifer has
- 00:06
out served them all professional surfers from every corner of
- 00:10
the earth Or never the edge of a sphere is
- 00:13
have tried and failed to beat him At this point
- 00:16
tristan has only one challenge left to overcome He desperately
Full Transcript
- 00:20
wants to beat the speed of light His friends have
- 00:24
advised him to let this one go But tristan has
- 00:26
always been more brawn than brains He'll just have to
- 00:29
learn this one the hard way Tristan figures that beating
- 00:32
light should be right in his wheelhouse Light travels in
- 00:35
waves and well so does he Unfortunately what tristan doesn't
- 00:39
know about light could fill a beach house He doesn't
- 00:42
know for example that the speed of light is a
- 00:44
constant In other words it travels at exactly the same
- 00:47
speed whether or not it's being chased by a hungry
- 00:50
shark That speed is two point nine nine eight times
- 00:53
ten to the eighth meters per second Or if you're
- 00:56
big on seeing everything written out in long form well
- 00:59
here you go Yeah that this constant speed is symbolized
- 01:03
by the letter c tristan also doesn't know that the
- 01:06
speed of light is equal to wavelength times frequency which
- 01:09
are represented by these symbols right here Now wave length
- 01:12
and frequency are not constance but they are inversely proportional
- 01:16
iii When one gets bigger the other gets smaller which
- 01:19
is how the speed of light remains constant no matter
- 01:21
what Yet another thing about which tristan is clueless is
- 01:25
the concept of amplitude Imagine a calm ocean tristan's cuppa
- 01:30
tea but stick with us This is like the baseline
- 01:33
of a wave now when a storm's a bruin and
- 01:35
those waves air really rolling there is oscillation as sometimes
- 01:40
the top of a wave is higher than our baseline
- 01:42
and sometimes the surface of the water is a bit
- 01:44
below our baseline roughly the same dealio with waves of
- 01:47
light the distance the height or depth of a wave
- 01:51
extends above or below the baseline is the amplitude looks
- 01:57
like it this way I could use an amplitude adjustment
- 02:00
anyway tristan armed with practically zero knowledge but the heart
- 02:02
of a champion is all ready for the big day 00:02:06.04 --> [endTime] Close one eye and anyone's a rematch
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