Yes, that is correct. (Slower than in a vacuum.)
Yes. The more dense the material the slower light travels. Light travels the slowest in diamond at about a third of its normal speed of 300 000 km /s in a vacuum.
If light passes into a material where the speed of light is faster, it will bend away from the boundary between the two materials. This occurs because light travels more slowly in denser materials, and when it exits into a less dense medium (where it travels faster), it refracts away from the normal line at the boundary. This behavior is described by Snell's law.
Light travels more slowly through 'optically dense' materials such as glass and diamond. The different wavelengths of light also move at different speeds in such materials, the blue light moves more slowly than the red light part of the spectrum, so all of the different colours that make up white light can be separated out when the white light enters the material at an angle. The blue light will bend more than the faster red light.
Red light travels more slowly in glass than violet light. This is because the speed of light in a medium is inversely proportional to its wavelength, and red light has a longer wavelength compared to violet light.
Light travels in a straight line through a vacuum or transparent materials.
Yes, through some materials. It certainly travels through air, and you may have noticed that it travels through water and glass.Yes, through some materials. It certainly travels through air, and you may have noticed that it travels through water and glass.Yes, through some materials. It certainly travels through air, and you may have noticed that it travels through water and glass.Yes, through some materials. It certainly travels through air, and you may have noticed that it travels through water and glass.
Optical Density. Which often is caused by normal density.
Light travels at its maximum velocity c in a vacuum. In a medium with a certain refractive index, it is slowed down and travels with velocity c/index
Light travels in a straight line, at a constant speed in a vacuum, and can be reflected, refracted, or absorbed when it encounters different materials or surfaces.
The speed of light in a vacuum is constant. Otherwise, the speed of light will depend on what materials it travels through. For example, the speed of light in air is similar to the speed of light in a vacuum; in water, it is quite a bit slower.
Simply put, because it bumps into things as it travels though a solid.
The speed of light does not vary by the color that it is perceived as, so all of the colors should travel at the same speed.