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...
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...
We know photons are what gives light to all objects it touches, but why exactly do they glow/create light? What is the energy of a photon that, when it is absorbed by a hydrogen atom, excites an electron from the ground state of the hydrogen atom ...
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...
Objects sat in spacetime are similar but in three dimensions of space and one dimension of time rather than the two dimensions of a stretched rubber sheet. The greater the mass of an object the more extreme the warping of space it causes, so a star warps spacetime more than a planet, and...
Find an expression for its magnification. 04:23 Define resolving power of telescope. 01:20 What is myopia? What are its causes? Name the type of the lens to corr... 04:42 Define resolving power for a compound microscope. On what factors does... 01:49 What is Hypermetropia (Far ...
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 ...
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...
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...