Gross, such as gross anatomy. It means to see with the naked eye or without aide of a microscope.
Macroscopic
You can just not very detailed you might mistake them for stars because with a naked eye it looks like a star
The microscopic world is difficult to see 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.
Invisible
It is safe to look at a solar eclipse with the naked eye only during totality. At any other time you need proper eye protection.
It is safe to look at a solar eclipse with the naked eye only during totality. At any other time you need proper eye protection.
"Nothing" almost works except "Nothing is unseen by the naked eye." Try again.
No, the only cell that's visible with the naked eye is the egg cell. Other cells are microscopic, including e. coli.
No, gas is typically invisible to the naked eye.
Venus
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.