What wavelength of light is emitted from a hydrogen atom when an electron moves from the n = 4 energy level to the n = 2 energy level? Which electron transition between the energy levels of hydrogen causes the emission of a photon of visible li...
What causes heat waves to occur? What gives off electromagnetic radiation? What does solar energy mean? What makes up the nucleus of an atom? What is the cause of synchrotron radiation? What makes electromagnetic waves? What makes an atom radioactive? How does the sun work using fusion and ...
As we pass up through the photosphere, the temperature drops and the gases, because they are cooler, do not emit as much light energy. This makes them less opaque to the human eye. Therefore, the outer edge of the photosphere looks dark due to an effect called limb darkening that accoun...
Another type of diffuse nebula, a reflection nebula doesn’t emit its own light, but scatters light from embedded stars. (Image credit: NASA, JPL-Caltech, Kate Su (Steward Obs, U. Arizona) et al.) Planetary nebula: The Helix Nebula This is composed of expanding gas that was blown off...
There are also what is known as Dark Nebulae,opaque cloudsthat do not emit visible radiation and are not illuminated by stars but block light from luminous objects behind them. Much like Emission and Reflection Nebulae, Dark Nebulae are sources of infrared emissions, chiefly due to the presence...
On the other hand, fluorescent describes the property of a material or an object that can emit light through fluorescence. This characteristic is key in various applications, including lighting, bioimaging, and material science. 6 The process of fluorescence occurs when an atom or molecule absorbs ...
to the ground state, energy released as light produces the aurora. Each element releases specific wavelengths, so the colors you see depend on the type of atom that is excited, how much energy it received, and how the wavelengths of light blend with each other. Scattered light from the sun...
During the Asymptotic Giant Branch (AGB) phase, the star undergoes mass loss, emitting a circumstellar shell of hydrogen gas. When this phase comes to an end, the star enters the PPN phase, where it is energized by a central star, causing it to emit strong infrared radiation and become ...
Comic rays are generated outside our solar system and blaze along at almost the speed of light. Without our protective bubble, these high-energy atom fragments would constantly bombard Earth. "Without the heliosphere, life would certainly have evolved differently - and maybe not at all," says ...
A molecular fragment that causes a compound to be colored by absorbing specific wavelengths of light. The presence of the chromophore gave the chemical its vibrant red hue. 4 Auxochrome An atom or group in dyes that can intensify or modify the chromophore's color. Incorporating the auxochrome re...