DCMI: Dublin Core™ Collection Description Frequency Vocabulary

DCMI: Dublin Core™ Collection Description Frequency Vocabulary frequency What do optical frequency combs do? Optical frequency combs are specialized lasers that act like a ruler for light They measure exact frequencies of light — frequency Frequency describes the number of waves that pass a fixed place in a given amount of time So if the time it takes for a wave to pass is is 12 second, the

frequency This backwards-and-forwards motion or “oscillation” is known as electrical frequency In the UK, alternating current oscillates 50 times every second, meaning

frequency frequency alternating cur- rents produce heat , but violent muscular contraction precludes their use The high frequency current which oscillates with a The frequency of the letters of the alphabet in English The inventor of Morse code, Samuel Morse , needed to know this so that he could give the