A normal healthy eye can see almost an unlimited distance, normally vision is stopped by something in the line of sight like buildings, trees, the earths curve
No, gas is typically invisible to the naked eye.
When you look at your blood with the naked eye all you see is red liquid. This is all anyone sees with the naked eye.
The term "naked eye" means that there is nothing helping the eye to see. for example, if you are using glassess or a telescpoe, then you are not using the naked eye.
You have a 3rd eye
Something that is so small that you cannot see it with the naked eye but must use a microscope to observe it
Radio waves are too long for the human eye to see. The light that is visible to the human eye consists of a small portion of the electromagnetic spectrum. Radio waves have wavelengths longer than visible light, making them invisible to the naked eye.
Around 2500-5000 visible stars with the naked eye.
no.
no not with the naked eye
If the question means from space and with the naked eye, then the answer is no. This is a long perpetuated myth.
Gross, such as gross anatomy. It means to see with the naked eye or without aide of a microscope.
It would depend on the type of salt. If it's normal table salt, then no, you cannot see it with the naked eye.