Can Light Be Shaped? A pulse of light can have almost any shape in space and in time, determined by the amplitudes and phases of its frequency components. Surprisingly, single photons can also be generated in a variety of complex shapes. Is light a physical thing? light, electromagnetic radiation that can be detected by the
Does Light Travel The Shortest Distance? The problem of refraction of light is analogous to the lifesaver description above. The light travels the path that gives the shortest time between two points. What light travels the shortest? WAVELENGTHS OF VISIBLE LIGHT As the full spectrum of visible light travels through a prism, the wavelengths separate
Can You See Ultraviolet Light At Night? At night there is virtually no UV present. Most night vision devices work by amplifying low levels of ambient visible or near-IR light. Some (thermal vision devices) amplify long-wave IR emitted by normal temperature objects. What would happen if humans could see ultraviolet light? Ultraviolet. If you could
What Items Cannot Reflect Light? Light reflects off objects and allows us to see. Some objects reflect light very well, like mirrors and white papers. Other objects, like brown construction paper, do not reflect as much light. Water is also good at reflecting light off its surface. What materials Cannot reflect light? Wood, concrete and
Does Light Come From Darkness? Light exists in many wavelengths we cannot see, but those wavelengths do not constitute ‘darkness‘. Something that appears dark in visible light might be giving off light in a wavelength we cannot see. True darkness is the absence of all light, it cannot be transmitted or otherwise moved. Can you
Is Light Itself Visible Or Invisible? Colors are our brains’ way of interpreting the wavelength of light: how far the light travels before the wave pattern repeats itself. But the colors we see—called “visible” or “optical” light—are only a small sample of the total electromagnetic spectrum. Can we actually see light? Our eyes detect light
Is Visible Light Communication Wireless? Visible Light Communication-an emerging wireless communication technology. Abstract: The Visible Light Communication (VLC) is an emerging technology, which provides distinct facilities such as fast data communication, secure data communication, high data rate wireless communication, etc. Which type of communication tool uses visible light? What is VLC? VLC is a free-space
Why Do White LED Lights Look Blue? Why do LED lights look blue? That’s because the energy that is emitted falls within the wavelength that determines the color blue. That wavelength is 450 and 500 nanometers. A certain amount of voltage is applied to the diode, and that voltage is also a contributing factor to
Is UV Light Visible To The Eye? Ultraviolet (UV) light has shorter wavelengths than visible light. Although UV waves are invisible to the human eye, some insects, such as bumblebees, can see them. This is similar to how a dog can hear the sound of a whistle just outside the hearing range of humans. Can
How Many Lumens Are In The Sun? For every watt our sun puts out, it produces 93 lumens of visible light. So at earth’s orbit, for each square meter, our sun puts out 127,000 lumens. How many lumens is full daylight? Daylight or direct sunlight has 120,000 lux or lumens of brightness. However, making a