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# The Wavelength Of Some Red Light Is 700.5 nm. What Is The Frequency Of This Red Light?

The frequency of light is the number of waves that pass a point each second. For example, if there are 1000 waves passing a point in one second, then the frequency of that light is 1 wave per second (1 Hz). If there were 100 waves passing a point in one second, then the frequency would be 10 Hz.

The wavelength of light is its distance between two wave peaks as a wave moves through space. To find out how fast something moves, you can multiply its speed by its time. So if you know how fast something moves and how long it takes to move from one place to another, then you’ll be able to figure out its speed.

So let’s take a look at those aspects of light. Light travels at 186,000 miles per second (about 300 million meters per second), which is called c in physics equations. We can use this value when we’re figuring out speed because it’s such a large number; we don’t need to be exact since it’s so far off from what we actually measure anyway! We’ll call our distance l and our time t (both measured in meters).

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