Radiowaves is the slowest light in movement. Radiowaves might not seem like light, but that would only be because our eyes can only detect the colors of the visible spectrum, not other kinds of light like radiowaves, infrared light, and X-Rays.
Sorry.
That's a good list of various forms of electromagnetic radiation ... visible, radio, x-rays, etc.
They all travel at the same speed.
faulty
No, light is at its fastest in a vacuum.
ceramic wears the slowest.
Light travels slowest in a medium with a high refractive index, such as glass or water. This is because light is absorbed and re-emitted by atoms in the medium, causing it to slow down compared to its speed in a vacuum.
Light travels slowest through materials with a higher refractive index, such as glass or diamond. This is because the speed of light in a material is inversely proportional to its refractive index.
dry air
The colors of light in order from fastest traveling to slowest are violet, blue, green, yellow, orange, and red. This is based on their respective wavelengths, with shorter wavelength light moving faster than longer wavelength light.
Light moves slowest through solids, as the particles are closely packed together and can absorb and re-emit the photons. This interaction causes light to slow down compared to its speed in a vacuum.
A very impure water is evaporated slower.
Light travels slowest in optically dense materials like glass or water due to the increased interaction and greater number of collisions with particles in the material, causing a delay in its propagation speed.
The speed of light is fastest in air, slower in water, and slowest in glass.
The sloth species that is considered the slowest is the Three-Toed Sloth, specifically the Pygmy Three-Toed Sloth (Bradypus pygmaeus), found in Panama. They move so slowly that algae can grow on their fur, which helps them blend in with their surroundings.