what is the difference between an emission and a reflection nebula?
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An emission nebula is a cloud of ionized gas. The most common source for ionizations are high energy photons emitted from a nearby star. These can be among some of the most colorful objects in the sky. Reflection Nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars.
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The Short Answer: A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. A nebula is a giant cloud of dust and gas in space.
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The dark nebulae are clumps or clouds that become opaque because of their internal dust grains. The form of such dark clouds is very irregular: they have no clearly defined outer boundaries and sometimes take on convoluted serpentine shapes. ... This radiation is not absorbed by dust and readily escapes the cloud.
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The reflection of light can be roughly categorized into two types of reflection. Specular reflection is defined as light reflected from a smooth surface at a definite angle, whereas diffuse reflection is produced by rough surfaces that tend to reflect light in all directions (as illustrated in Figure 3).
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What is the difference between luminosity and apparent brightness? The apparent brightness is how much energy per square meter per second is coming from the star, as measured on Earth. Luminosity is the total energy radiated per second - measured in watts.
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Originally Answered: What is difference between black hole and nebula? nebula is a place where stars are born where there is high pressure and temperature and dust and gas. But black hole is a star that went out of fuel and collapse into its own core and has extreme mass and gravity.
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Visible light is part of the electromagnetic spectrum. Telescopes make distant objects appear both nearer and larger. Optical telescopes collect visible light.
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A specular reflection is what you get from a polished surface, or mirror. It is clear, and you can see "through" the mirror. A diffuse reflection is what you get from a white wall. The light is bounced of it, but in random directions so you cannot see the light source in the reflection.
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A dichroic mirror allows light of a certain wavelength to pass through, while light of other wavelengths is reflected. ... The emitted light has an appropriate wavelength and is able to pass. Excitation light that is reflected by the specimen is not able to pass through the dichroic mirror and will be blocked.
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Light can be emitted or reflected. Emitted light is from an object that is generating the light it gives off. ... Reflected light does not create its own light. Light from another source bounces off of objects, which is how we see it.
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Everything that has a temperature gives off electromagnetic radiation (light). Shortwave radiation contains higher amounts of energy and longwave radiation contains a smaller amount of energy. ... On the other hand, Earth's radiation is emitted as longwave, as it is much cooler but still emits radiation.
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Shadows and reflections are the effects of light. Shadows are formed when objects block a source of light. Night is caused by the Earth blocking the light from the Sun - on the half of the Earth in shadow it is night time. ... Reflections are caused by light bouncing off objects.
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Radio telescopes detect long wavelength light and investigate diverse things. ... Reflecting telescopes see visible light and they see things way out in space. Refracting telescopes detect visible light; they see things out in space but not as far as reflecting telescopes.
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In some nebulae, stars form out of large clouds of gas and dust; once some stars have formed inside the cloud, their light illuminates the cloud, making it visible to us. These star formation regions are sites of emission and reflection nebulae, like the famous Orion Nebula shown in the picture on the right.
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What's the difference between a line and a continuous spectrum? Continuous spectra is where the sun and heated solids emit radiation that contain all frequencies, and line spectra are produced by excited atoms in the gas phase, and contain only certain frequencies.
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1.8 Reflection, Transmission and Absorption. Reflection is the process by which electromagnetic radiation is returned either at the boundary between two media (surface reflection) or at the interior of a medium (volume reflection), whereas transmission is the passage of electromagnetic radiation through a medium.
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Yes, indeed! Many nebulae are visible from Earth in a small and cheap telescope, and even to the naked eye (if you are standing in a sufficiently dark place).