500 meter
No, the human egg is not visible to the naked eye as it is microscopic in size.
No, human eggs are not visible to the naked eye as they are microscopic in size.
No, the human egg cell is not visible to the naked eye as it is microscopic in size.
Around 2500-5000 visible stars with the naked eye.
100 um
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.
I'm not sure, but I know that it is the only cell in the human body that can be viewed with the naked eye.
the human heart can be seen with the naked eye if chest is open
No, electrons are too small to be seen with the naked eye. They are subatomic particles that are much smaller than the wavelength of visible light, making them invisible to human eyes.
There are 88 recognized constellations that can be seen with the naked eye from different parts of the world.
The tiniest unit the naked eye can see is around 0.1 millimeters, which is approximately the width of a human hair. Anything smaller than that would generally require the use of a microscope to be visible to the human eye.
the Oocyte is the largest human cell and can be seen by the naked eye. more information on the Oocyte: http://en.wikipedia.org/wiki/Oocyte