Light waves - as long as they are between roughly 350 to 750 nanometers in wavelength.
Any light wave with a wavelength between roughly 350 to 750 nanometers.
Any light wave with a wavelength between roughly 350 to 750 nanometers.
By definition, a microorganism cannot be seen by the unaided human eye.
Human eye can see light rays only. Most probably the vise verse is true. The electromagnetic rays that are seen by the human eye are called as light rays. It is from violet to red colors. Ultraviolet and infrared rays are not seen by human eye.
If you mean, "which wavelengths of light can the human eye detect," the human eye can see wavelengths from about 390 to 700 nanometers.
No, not with the human eye.
* seen by the naked eye
a ocean wave or a visible wave the human eye can see
An optometrist, ophthalmologist, or an optician.
microeconomist
living things that are to small to be seen by the human eye
A single fungus organism cannot be seen with the human eye, but a fungal colony, such as a mushroom or jock itch, certainly can be.