Virus Have No Color — Not Even Gray
They don’t care about your wannabe advanced human vision.
Viruses are (not) red
Viruses are (not) blue
Even if you magnify them
They won’t be visible to you!
Viruses are small creatures, even though they aren’t even entitled to the “creature” label, which would assume them being living things. While bacteria is defined as life as we know it (the most simple one-celled life), a virus is not, because it cannot function by itself. It needs the metabolism of a host.
This aside, let’s talk about small sizes and colors. Virus structures are about 100–400 nm in diameter. Coronavirus is measured to be 120–160 nm in size.
Bacterias are a bit bigger, they are about 1000 nm or 1 µm.
So they are small — so what? If only they were microscopic, but they are smaller than that. Smaller than you could see through an ordinary optical microscope, no matter how much it could magnify.
The thing is that when we are down to those sizes, we are around the lower limit of visible light being able to reflect. Visible light is an electromagnetic wave with a specific wavelength. For example, the shortest visible wavelength is about 400 nm. When an electromagnetic wave is…
