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What are 3 means of producing light?
Three means of producing light are incandescence (where a material is heated until it emits light), fluorescence (when a material absorbs and re-emits light at a different wavelength), and bioluminescence (light generated by living organisms, such as fireflies).
Why we cannot see the light source when using 3 opaque materials?
We cannot see a light source even if 1 opaque material is blocking the light source. Opaque materials do not allow light to pass through them so we cannot see light through them but we can still see light reflected by them.
What is a simple definition for these 8 different light sources and an example for each Incandescence Chemiluminescence Triboluminescence Electric discharge Florescence and 3 more B?
the 3 other ones are bioluminescence, phosphorescence and electroluminescence
What are the 3 natural source of light?
sun,moon and stars
Three ( 3 ) measurable quantities of light?
The 3 measurable quantities of light are: Luminous intensity-- which refers to the brightness of a light source Luminous flux-- is the rate at which light is emitted from a source and strikes the surface of a whole sphere Illumination-- is the deliberate application of light to achieve some aesthetic or practical effect
What 3 things do you need to make a shadow?
To make a shadow, you need a light source, an object to obstruct the light, and a surface for the shadow to be cast upon. The light source emits light, which is blocked by the object, creating the shadow on the surface behind it. The size and shape of the shadow can vary depending on the position of the light source and the object.
If a 72-candela light source is located at a distance of 3 meters from a surface the illuminance on the surface is?
The illuminance on the surface can be calculated bu using the formula: E=I/s2. E stands for the illuminance on the surface (in lux), I stands for theintensity of the light from the source (in candelas), and s stands for the distance from the light source to the surface (in meters). So, the answer is: 8 lux
What 3 things make a shadows?
A shadow is formed when an object blocks light, creating a dark area behind it. Three factors that determine the size and shape of a shadow are the angle at which the light hits the object, the size of the light source, and the distance between the object and the light source.
How is the power wired in a 3-way switch setup where the power source is located at the light fixture?
In a 3-way switch setup with the power source at the light fixture, the power is wired from the circuit breaker to the light fixture, then to the first switch, and finally to the second switch. This creates a loop that allows the switches to control the light fixture from different locations.
For photosynthesis a cell needs what 3 things?
CO2 and water are raw materials. Light is the energy source
What does fluorescent light look like through a spectroscope?
Fluorescent light is what astronomers call a "bright line" spectrum: there are only specific frequencies that are present, as opposed to the continuous rainbow one sees from a black body source (an incandescent light is basically a black body source). You can get some idea by holding up a CD in fluorescent light so the light reflects off it and back to your eye, then moving it around a bit. Depending on the type of fluorescent bulb, you'll probably see anywhere from 3 to 5 distinct images of the source, each a different color.
How can the nature of the source of light wave can influence the speed of light in a vacuum?
The speed of light in a vacuum is constant at about 3 x 10^8 meters per second. The nature of the source of the light wave does not directly influence the speed of light in a vacuum. The speed of light is determined by physical constants in the vacuum, such as the permeability and permittivity of free space.
