Editing 273: Electromagnetic Spectrum
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Randall likes to speculate what the world would look like if humans could see radio waves, gamma waves, etc. Such a thought experiment would be pretty abstract due to the total lack of a frame of reference (since everything outside the visible light spectrum is by definition invisible and thus beyond human optical perception), but for many people, that's also what makes it enticing. Randall immediately turns this profound train of thought around with a crude joke that he wants to know what the viewer's sister would look like in the nude, an activity for which x-rays would be useful. | Randall likes to speculate what the world would look like if humans could see radio waves, gamma waves, etc. Such a thought experiment would be pretty abstract due to the total lack of a frame of reference (since everything outside the visible light spectrum is by definition invisible and thus beyond human optical perception), but for many people, that's also what makes it enticing. Randall immediately turns this profound train of thought around with a crude joke that he wants to know what the viewer's sister would look like in the nude, an activity for which x-rays would be useful. | ||
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+ | After centuries of practice with Greek epicycles, scientists often analyze periodic phenomenon including waves, as the shadow of sums of circles. The circles are distinguished by frequency, measured in units, called Hz, and traditionally represented by the letter, f. | ||
==Transcript== | ==Transcript== |