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Where do electromagnetic waves come from?
A spectrum is a representation of the range of frequencies/wavelengths present in electromagnetic radiation. It may be plotted as the power or intensity on the vertical axis, and the wavelength or frequency on the horizontal axis. When talking about the electromagnetic spectrum it is sometimes presented as a chart or table showing the range of frequencies/wavelengths that are covered by electromagnetic radiation. Thus it represents radiation from radio frequencies through infra red, visible light, ultraviolet light, x-rays and gamma radiation. Where does it come from? The first link below shows the history of "spectrum" which was originally used to refer to the colours of light when split up by a rainbow or prism. It was later used by analogy to refer to "a range of objects". I guess that someone just wanted to make a chart showing how the various radiation types are related.
Cone shaped tool that helps you pour liquids or fine powders into a narrow opening without spilling?
The funnel
Can we experience heat without matter?
Yes. Energy radiated in the infra-red part of the spectrum can be felt without any intervening matter. However, you must still have the temperature sensitive nerves in your skin, or temperature sensitive equipment in your equipment and those will be made of matter!
A wave where matter vibrates at right angles to the direction in which the wave travels?
Without going into a lot of detail trying to describe them, that phenomenon is referred to as an "electromagnetic wave". They are all around us. Depending on wavelength, they have names like 'radio', 'microwaves', 'heat', 'light', 'ultraviolet', 'x-ray', and 'gamma ray'.
Why is electromagnetic energy important?
This is important because it helps forces of electrons move across the conductor. This happened when the magnetic field changes.
Which part of the electromagnetic spectrum can humans sense without using equipment of technology?
Humans can sense only a small portion of the electromagnetic spectrum without using equipment or technology, known as visible light. This range includes colors that we can perceive, such as red, orange, yellow, green, blue, indigo, and violet.
Is the electromagnetic spectrum harmful?
Certain parts of it can be. High frequency waves such as X-rays, gamma rays, and ultraviolet light can cause radiation burns and cancer. At the same time, life could not exist without the electromagnetic spectrum. The sun heats the earth through electromagnetic waves, and the light that drives photosynthesis is also part of that spectrum. Visible light, which allows us to see, is in the same range.
What type of light waves can travel through a vacuum?
Electromagnetic waves, including visible light, infrared, and ultraviolet radiation, can travel through a vacuum without the need for a medium to propagate.
How is the electromagnetic spectrum useful?
Visible light, which lets humans and other animals see, is part of the electromagnetic spectrum. RF (radio frequency) waves are part of the electromagnetic spectrum. RF transmissions carry radio and television broadcasts. They have the lowest frequency. Microwaves are part of the electromagnetic spectrum. X-Rays are part of the electromagnetic spectrum and have the highest frequency..
Why is sunlight's spectra called a continuous spectrum?
Sunlight's spectrum is called a continuous spectrum because it contains all the colors of the rainbow without any gaps or breaks in the distribution. This means that sunlight consists of a continuous range of wavelengths of electromagnetic radiation.
What type of spectrum do most stars have?
Most stars have continuous spectra, which contain a continuous range of wavelengths without any gaps. This is due to the emission of light from the star's surface at various temperatures.
Why are electromagnetic waves associated with radiation?
Electromagnetic waves are associated with radiation because they can transfer energy through a vacuum or a medium without the need for a material medium. When electromagnetic waves interact with matter, they can cause the release of energy in the form of radiation such as light, heat, or radio waves.
What type of waves on the em SpectRuM are the least harmful?
Radio waves are the least harmful waves on the electromagnetic spectrum because they have low energy levels and long wavelengths. They are commonly used in communication technologies like radios and cell phones without causing harm to human health.
Why is electromagnetic spectrum called continuous spectrum?
The EM spectrum may, in fact, not be continuous, but quantised wrt the frequency of the emitted photons that comprise the spectrum. This implies that the frequency of oscillation of the emitting quantum mechanical system is quantised. To establish beyond doubt the continuity, or otherwise of the EM spectrum would require the accutate measurement of the frequency of individual photons. Given the magnitude of Planck's Constant (~ 6.26 x 10^-34 Js) the Planck-Einstein-Schrodinger equation, E = hv shows that, for a single photon a measurable signal cannot be generated at low frequencies (~ a few Hz), whilst at high frequencies (~ a few GHz) any quantisation of the frequency of the photon would not be observable.
In a vacuum waves from all parts of the electromagnetic spectrum move?
In a vacuum, electromagnetic waves from all parts of the electromagnetic spectrum can indeed propagate. Unlike mechanical waves, such as sound waves, which require a medium (like air, water, or solids) to travel through, electromagnetic waves do not require a medium and can travel through the vacuum of space. The electromagnetic spectrum encompasses a wide range of frequencies, including radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. Each type of electromagnetic wave has its own characteristic frequency, wavelength, and energy. In a vacuum, electromagnetic waves travel at the speed of light, which is approximately 299,792,458 meters per second (or about 186,282 miles per second) in a vacuum. This speed is constant for all electromagnetic waves in a vacuum, regardless of their frequency or wavelength. Electromagnetic waves can travel through space, transmitting energy and information over vast distances. They play a crucial role in various natural phenomena, such as the transmission of sunlight from the Sun to the Earth, the propagation of radio signals through the atmosphere, and the emission of X-rays and gamma rays from distant astronomical objects. In summary, electromagnetic waves from all parts of the spectrum can travel through a vacuum, allowing them to propagate freely through space without the need for a medium. This property of electromagnetic waves enables them to play essential roles in communication, astronomy, medicine, and many other fields of science and technology.
What waves can transfer energy with out a medium?
Electromagnetic waves, such as light and radio waves, can transfer energy through a vacuum without the need for a medium. This is because electromagnetic waves are made up of oscillating electric and magnetic fields that can propagate through empty space.
What type of spectrum does the Sun's photosphere produce?
The Sun's photosphere produces a continuous spectrum, also known as a blackbody spectrum. This spectrum shows a smooth distribution of colors without any spectral lines, indicating a wide range of wavelengths emitted by the Sun.
