Why we can't see a photon?

Answer 1

We can see a photon in the sense that it is photons that are going into our eyes so that we can see things. The human eye is just on the verge of being able to detect an individual photon. If our eyes were able to detect individual photons, we would see a very small flash of light when one entered one of our eyes. As it is, everything we see is the result of photons entering our eyes. The energy of the photon, determines the color that we see.

Answer 2

First of all, in order to 'see' anything, you have to bounce visible light off of it.

The concept of bouncing visible light off of wavelengths of visible light, you must

admit, is a pretty weird thought.

Next, the size of the wavelength of visible light ranges from about 380 to 750 nanometers.

That means that it takes between 33,900 and 66,800 visible light waves end-to-end

to cover one inch.

The 'pixels' in your eye are way farther apart than that. It would be like trying

to measure a mosquito with a half-mile stick that has no marks on it.

Answer 3

Photons do not have mass and travel at the speed of light, making them difficult to detect with our eyes. Our eyes are sensitive to photons within the visible light spectrum, but photons at other wavelengths such as ultraviolet or infrared are invisible to us. Additionally, photons can pass through our eyes without interacting with any molecules in the eye, further contributing to why we can't see them.