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If / when light is generated by heating, a continuous spectrum is generated. A small portion of this electromagnetic spectrum may be detected by humans.
When light is generated by creating a plasma, then only the spectral lines particular to that substance are generated.
You can perform this simple experiment yourself. If you hold a CD at an angle towards an incandescent lamp, you'll see a complete colour spectrum - there will be no breaks between the colours.
If you repeat the experiment with a fluorescent (or CFL) lamp, you'll see several separate colours, with clearly no continuous grade of colour between them.
This is because the fluorescent tube actually generates a plasma inside it, and the UV light from the plasma will excite the phosphors (the white coating in the tube) on the tube. It needs several phosphors to approximate the colour of white light, but it is only an approximation.
What else can I help you with?
How is light energy generated and transmitted?
Light energy is generated through the excitation of electrons in atoms or molecules. This excitation can occur through various processes such as heat, electricity, or chemical reactions. Once generated, light energy travels in waves or particles, depending on the medium it is traveling through, until it reaches its destination or encounters an obstacle.
Is light from the sun the same thing as light from a light bulb?
Both sunlight and light from a light bulb are forms of electromagnetic radiation, but they are generated differently. Sunlight is natural light produced by the sun through nuclear fusion, while light from a light bulb is artificial and generated through electricity passing through a filament or gas. Both sources emit light that consists of a spectrum of wavelengths, but they may have different intensities and qualities.
Why is the light switch warm?
The light switch may feel warm because of the flow of electricity through it, which can cause some heat to be generated.
How is light generated and what are the processes involved in its production?
Light is generated through the emission of electromagnetic radiation by atoms or molecules. This process involves the excitation of electrons to higher energy levels, followed by their return to lower energy levels, releasing photons in the form of light. This can occur through various processes such as incandescence, fluorescence, phosphorescence, and bioluminescence.
How are infrared red generated?
Infrared light is typically generated by heating objects until they emit thermal radiation in the infrared range. This can be achieved through various methods such as incandescent light bulbs, hot surfaces, or lasers specifically designed to emit infrared light.
How is light generated in the sun?
Light is generated in the sun through a process called nuclear fusion. In the sun's core, hydrogen atoms combine to form helium, releasing a tremendous amount of energy in the form of light and heat. This energy is what sustains the sun and provides light and warmth to our solar system.
What form of energy does a flashlight produce?
A flashlight produces light energy, which is typically generated through the conversion of electrical energy into light energy using a bulb or LED.
The suns energy is generated at its?
The sun's energy is generated at its core through the process of nuclear fusion, where hydrogen atoms fuse together to form helium, releasing immense amounts of energy in the form of heat and light. This energy then travels through the sun's layers before being emitted as sunlight into space.
How is oxygen generated in photosynthesis?
Oxygen is generated in photosynthesis through a process called photolysis, where water molecules are split into oxygen, protons, and electrons using light energy absorbed by chlorophyll in plant cells.
Is the generation of light by an electric lamp a chemical or physical change?
This is a physical change. When the electrons go through the filament (or gas), there is no chemical change, only the physical change of temperature. The electricity to power the light may be generated chemically (fossil fuels or batteries) or from a hydroelectric plant. The light from "glow sticks" is an example of light generated by chemical changes.
Seven ways light can be produced?
Light can be produced through incandescence, where an object is heated until it emits visible light. It can also be generated through luminescence, which includes processes like fluorescence and phosphorescence. Other methods include bioluminescence, electric discharge, and chemiluminescence.
What two types of energy is fire?
Fire is primarily thermal energy, which is generated through the burning of fuel. It can also produce light energy in the form of visible light and infrared radiation.
