yes
Like a LED flashlight, the electricity is passing the emitter, turned into light.
Shining a flashlight does not involve friction.
Yes, shining a flashlight on the surface of crystals can enhance their appearance by making them sparkle and reflect light. The light highlights the unique features and colors of the crystals, making them more visually appealing.
When you see a red light on your flashlight, it is typically used for preserving night vision or signaling. You should adjust your eyes to the darkness and avoid shining the light directly into your or others' eyes.
Shining a flashlight on a mirror in a dark place will reflect the light back towards the source, creating a brighter and more focused beam of light. The mirror will redirect the light waves without scattering them, maximizing the illumination in the direction of the flashlight.
The light from the flashlight reflects off the mirror and bounces back. This creates a bright spot of light on the opposite wall or surface. The mirror reflects the light without absorbing it, making the area feel brighter despite the flashlight only shining in one direction.
To prove that light travels very quickly, first, you need a flashlight. Because a flashlight is giving off light into a focused circle, it is still light. If you turn on the flashlight, as soon as you hit the switch or button, the circle of light at the other end shining on something appears instantly. You cannot catch the light in motion towards the surface the light is being aimed onto, and because light travels so fast, that is why you cannot see the light between the flashlight and the light on a surface.
scattered light
When you shine a flashlight at a mirror it proves that you are able to turn the flashlight on. The reflection of that light can be used to demonstrate some basic principles of optics, such as that the angle of incidence equals the angle of reflection. It proves that the flashlight is in working order, that you are able to direct the light toward the mirror, that the light is reflected by the material at the back of the mirror, that the mirror itself is opaque, and that you have access to a mirror and a flashlight.
Yes, you can use a flashlight to observe diffraction. When shining the light through a small slit or around an obstacle, you may notice the light bending and spreading out, which is a phenomenon of wave diffraction. This can be a simple way to demonstrate diffraction in an educational setting.
A flashlight can potentially cause temporary blindness if it shines directly into your eyes, especially in low-light conditions. It can also create a bright afterimage that affects your vision temporarily. It's important to use caution and avoid shining a flashlight directly into anyone's eyes.
The particles you see floating in the air when shining a flashlight in the dark are typically dust, lint, or other small airborne particles that reflect the light.