* Understand the conversion: 1 meter is equal to 1,000,000,000 nanometers (1,000,000,000 nm).
* Use scientific notation: 4.5E-7 meters is the same as 4.5 x 10^-7 meters.
* Multiply by the conversion factor:
(4.5 x 10^-7 meters) * (1,000,000,000 nm / 1 meter) = 450 nm
Therefore, 4.5E-7 meters is equal to 450 nanometers.
