Zero (0) light cannot pass through opaque materials.
The speed of light is constant and does not change based on the material it passes through. However, when light enters a medium such as glass or water, its speed decreases due to interactions with the atoms in the material.
GlassIn naturally occurring media the slowest speed occurs in diamond at well under half c. Look up its refractive index, it is the highest.
The speed of light is a constant in a vacuum and does not change, regardless of the medium it passes through.
it travels at c (speed of light in a vacuum)
When the speed of light in the two media is not the same.
Diffraction.
The color of light that travels through glass with the minimum speed is violet. This is because the speed of light in any medium, including glass, is dependent on the medium's refractive index, with shorter wavelengths like violet experiencing a slower speed.
When light passes through glass, its speed decreases and it bends, or refracts, due to the change in the medium.
Objects can bend light through a process called refraction, where light changes speed as it passes through different mediums. This change in speed causes the light to bend. Additionally, the shape and density of an object can also affect how light is bent as it passes through or around the object.
Light slows down when it passes through different mediums because it interacts with the atoms and molecules in the medium, causing it to change direction and speed. This interaction results in a decrease in the speed of light as it travels through the medium.
It slows from c to c/n where n is the refractive index of water
No. Light slows down whenever it passes through water. Nothing is faster than the speed of light in a vaccum.