A ripple tank creates waves by vibrating a surface with a motor underneath the tank. This makes the surface of the water move up and down, creating the waves that are more visible due to the light shining from above, which reflects off the waves and reveals their patterns and behaviors.
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Ultraviolet (UV) radiation has more energy than visible light waves.
Radio waves can penetrate obstacles like walls and buildings more effectively than visible light. They are also able to travel longer distances and can be easily transmitted through the Earth's atmosphere. Additionally, radio waves are used in communication technologies such as radar and broadcasting, which are not feasible with visible light.
Higher frequency photons have more energy than lower frequency photons.
Visible light consists of the band of wavelengths to which the structure of the human eye is sensitive. Radiation outside of that band may enter the eye, but there's nothing in there that responds to it, so the brain remains unaware of it.
Rainfall can make it easier to see spider webs, as the raindrops collect on the silk threads, making them more visible.