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Why can't you observe stars in infrared?
Stars emit radiation across a broad spectrum, including infrared light. However, observing stars in infrared can be challenging due to interference from atmospheric absorption and emission, and the need for specialized instruments to detect faint infrared signals. Additionally, stars emit most of their energy in visible light, which is why traditional optical telescopes are commonly used for observing them.
Is the Rainbow an Radiation?
No, the rainbow is not radiation. It is a natural optical phenomenon that occurs when sunlight is refracted, reflected, and dispersed in water droplets in the Earth's atmosphere, creating a spectrum of colors. Radiation refers to the emission of energy as electromagnetic waves or particles.
What does lasar stand for?
LASER stands for Light Amplification by Stimulated Emission of Radiation. It is a device that emits a beam of coherent light through optical amplification.
Why are light sources with a 21cm wavelength useful to astronomers?
Light sources with a 21 cm wavelength correspond to the radio emissions from neutral hydrogen atoms, which are abundant in the universe. This wavelength allows astronomers to map the distribution and density of hydrogen gas in galaxies and interstellar space, providing insights into the structure and dynamics of the universe. Additionally, 21 cm radiation can penetrate dust clouds that obscure optical observations, enabling the study of regions otherwise hidden from view.
How is Infrared used to study space?
Infrared is used to study space by detecting the heat emitted by celestial objects, allowing astronomers to observe phenomena that are not visible in regular optical wavelengths. It can penetrate dust clouds that obscure objects in visible light, revealing stars, galaxies, and planetary formations hidden within. Infrared observations also help in studying the early universe, as they can capture light from distant, cooler objects like brown dwarfs and the formation of new stars. Instruments like the James Webb Space Telescope are specifically designed to conduct detailed infrared observations, enhancing our understanding of the cosmos.
What type of Electromagnetic radiation used in optical fiber communication?
Optical fiber communication primarily uses infrared light as the type of electromagnetic radiation. This is because infrared light has a longer wavelength that is well-suited for transmitting data over long distances through optical fibers with minimal signal loss.
What kind of electromagnetic waves from the sun bring heat energy to trees?
Electromagnetic radiation in Optical and Infrared frequency.
What does a specialized non-optical telescope see?
There are telescopes used to detect radio waves and others to detect infrared radiation.
Optical telescopes are designed to collect and create images from is it white or visible light or x rays or infrared radiation or gamma rays?
An "optical" telescope would naturally collect light from optical wavelengths, meaning visible light from ~400-800nm.
What type of electromagnetic wave has highest energy a ultraviolet wave or an infrared wave?
Infrared radiation has a lower frequency than optical light as it is below the red end of the spectrum. "Infra" means below, making "infrared" meaning "below red. On the other hand, ultraviolet radiation has a higher frequency than optical light as it is above the violet end of the spectrum. "Ultra" means "above or greater", making ultraviolet meaning "above violet". The answer to your question would be: ultraviolet radiation has more electromagnetic energy than infrared radiation.
What element focuses infrared radiation?
nothing Anything that is transparent will have a refractive index. Glass is transparent to visible light and has a refractive index with it. Having these combined properties lets you make a lens for visible light out of glass. Now glass is transparent to IR radiation so any glass lens would focus IR radiation.
Is all electromagnetic radiation in the optical portion of the electromagnetic spectrum is visable?
No, not all electromagnetic radiation in the optical portion of the spectrum is visible to the human eye. The visible portion of the spectrum ranges from about 400 nanometers (violet) to 700 nanometers (red), but there are wavelengths outside of this range that can also be classified as part of the optical spectrum, such as ultraviolet and infrared light.
What is used to measure pyrometer?
A pyrometer measures high temperatures by detecting the thermal radiation emitted by the object being measured. This radiation is then converted into a temperature reading. Common types of pyrometers include infrared thermometers and optical pyrometers.
What has the author Kenneth Borg written?
Kenneth Borg has written: 'Computations on interstellar extinction' -- subject(s): Interstellar matter, Optical properties
Why is a cell phone an optical technology?
Because they work primarily using electromagnetic waves - which encompass radio waves, visible light, microwaves, UV radiation, lasers, gamma rays, infrared rays, and X-rays... all of these are optical technologies.
Why can't you observe stars in infrared?
Stars emit radiation across a broad spectrum, including infrared light. However, observing stars in infrared can be challenging due to interference from atmospheric absorption and emission, and the need for specialized instruments to detect faint infrared signals. Additionally, stars emit most of their energy in visible light, which is why traditional optical telescopes are commonly used for observing them.
What can you see with a non-optical telescope?
An optical telescope is one that is desigend to see light. Other telescopes will observe some other radiation, usually some kind of electromagnetic radiation. This can include anything in the EM spectrum: radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays. Watching the Universe in these radiations makes it possible to see some things that are not visible in normal light. For example, far-away objects in our Solar System will not reflect a significant amount of light, but can be visible in infrared.
