Which wave is the most dangerous to humans? radio waves, visible light waves, or gamma rays? and how?

Question

Radio waves
visible light waves
gamma rays

and how is it dangerous?

another question:what is wrong with near-sighted and far-sighted vision? what can they se best?

bonus: what is the difference between a real & virtual object?

all answers are appreciated!!!

Answer 1

I'm pretty sure that gamma rays are the most dangerous. They can kill living cells. That is what some onocologist use to kill cancerous cells.

Near-sighted is having a refractive defect. They can see nearby object and object far away are blurry. Far-sighted people is caused by an imperfection in the eye. They can see obects far away and object near are our of focus.

A real object is actually existing and a virtual object is existing in the mind or essence.

Answer 2

What makes radiation dangerous is that they have enough energy to remove an electron from a atom, (ionizing radiation). This energy is reached with x-rays so all radiation with more energy ie shorter wavelenth can damage cells.