One of the ways to see light wavelengths is by using a device called a spectrophotometer or a spectrometer. A spectrophotometer is an instrument that measures the intensity of light at different wavelengths. It works by passing a beam of light through a sample and then analyzing how the sample interacts with different wavelengths of light.
The basic principle behind a spectrophotometer is that different substances absorb or transmit light at specific wavelengths. By measuring the amount of light absorbed or transmitted by a sample at different wavelengths, scientists can obtain a spectrum that represents the unique pattern of absorption or transmission for that substance.
Spectrophotometers are commonly used in various scientific fields, such as chemistry, biology, physics, and environmental science, to analyze the composition and characteristics of substances. They are also used in industries like pharmaceuticals, food and beverage, and environmental monitoring.
In terms of human perception, our eyes can only detect a limited range of wavelengths known as the visible spectrum. However, specialized instruments like spectrophotometers can measure and visualize a much broader range of wavelengths, including ultraviolet (UV) and infrared (IR) light, which are outside the range of human vision.