The physiological effects of electromagnetic radiation change with frequency ... penetration into biological tissues goes down, so the skin and eyes, rather than the brain, become the main ...

We cannot see ultraviolet (UV) light but it can have hazardous effects on the human body ... Changes in atoms and their nuclei can cause electromagnetic waves to be generated or absorbed.

The chameleon, a lizard known for its color-changing skin, is the inspiration behind ... creating materials that can efficiently absorb electromagnetic waves, such as radar or microwaves, has ...

A material with negative dielectric permittivity does not support propagation of electromagnetic waves; instead the electromagnetic field decays inside the material within a certain skin depth and ...

X rays are a form of electromagnetic radiation that can penetrate or pass through ... risk for adverse effects – the relationship is almost linear. Adverse effects could include skin redness, ...