What is the wavelength of infrared in scientific notation?

Explanation:

Infrared radiation has wavelength in the range between 700 nm and 1 mm. Lets' convert these values into scientific notation, keeping in mind that:

Let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

The higher value is:

So, the range of wavelength of infrared radiation is:

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the amount of current in the coil