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Photons are created when electrons in atoms move to lower energy levels, releasing energy in the form of light. Photons play a crucial role in the universe by carrying electromagnetic force, enabling light and other forms of electromagnetic radiation to travel through space, and allowing us to see and interact with our surroundings.
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How are photons made and what is their role in the universe?
Photons are particles of light that are created when an atom releases energy. They play a crucial role in the universe by carrying electromagnetic force, allowing for the transmission of light and energy, and enabling processes like photosynthesis and vision.
Are photons omnipresent?
Yes, photons are everywhere in the universe. They can travel through empty space and are emitted by all sources of light, such as stars and light bulbs. Ultimately, they are a fundamental building block of electromagnetic radiation.
How long have these microwave photons have been traveling through space?
Microwave photons from the cosmic microwave background radiation have been traveling through space for approximately 13.8 billion years, since the early universe.
Can photons be accelerated?
Photons, as massless particles, always move at the speed of light in vacuum and cannot be accelerated further. They can change direction or wavelength through phenomena like reflection, refraction, or scattering, but their speed remains constant at the speed of light.
How do you calculate the mass of light?
light has zero mass. Photons have zero mass. So according to e=mc2 light must also have zero energy. Astonishing how all these photons reach us from all the way across the universe! But all physical things have mass
How are photons made and what is their role in the universe?
Photons are particles of light that are created when an atom releases energy. They play a crucial role in the universe by carrying electromagnetic force, allowing for the transmission of light and energy, and enabling processes like photosynthesis and vision.
When the universe turned transparent?
About 377,000 years after the Big Bang, the density of matter and photons in our Universe dropped to the point where photons were no longer likely to blast electrons away from nuclei. At this point, photons could travel freely throughout our Universe, which meant our Universe had become "transparent" to light (it had previously become transparent to neutrinos). The photons that became free to roam eventually reached our Earth, and are now seen as the CMBR.
Where can you find an explanation of photons?
One can find an explanation on photons online on websites, such as Universe Today, Wikipedia and Science World. Photons are elementary particles of light.
Are photons omnipresent?
Yes, photons are everywhere in the universe. They can travel through empty space and are emitted by all sources of light, such as stars and light bulbs. Ultimately, they are a fundamental building block of electromagnetic radiation.
When astronomers say that the universe became transparent years after the big bang what do they mean?
In the early period after the Big Bang, the universe consisted of a plasma of nuclei, electrons and photons. These protons were bound in the plasma and not free to move about. About 0.4 million years after the Big Bang, when the universe had cooled to around 4000 K, photons stopped being in thermal equilibrium with matter: the universe became transparent to photons - light could move about.
What happened 3800000000 years after the big bang?
Approximately 377,000 years after the end of inflation, the density and temperature of the proton / electron / photon "soup" had decreased to the point where, on the average, photons would no longer blast electrons from protons, when the former went into an orbital near the latter. When this happened, photons were de-coupled from the other two, and could then move freely throughout our Universe. Following that event, photons began to move from all parts of our Universe towards all other parts of the our Universe. As the photons continued to move for the next 13.7 billion years or so, space continued to expand. Thus, the wavelengths of these photons grew. At this time in the history of our Universe, all such photons have had their wavelengths expand such that they are now all microwave photons. This why all parts of our Universe now experience an almost perfectly isotopic microwave background radiaion.
When did Universe - role-playing game - happen?
Universe - role-playing game - happened in 1981.
When was Secret Rhythm of the Universe created?
Secret Rhythm of the Universe was created in 2001.
What is the difference between speed and light?
Speed is how fast something moves. Light is a form of energy carried by massless photons, these photons move at the speed of light, which is the fastest speed that anything in the universe can travel.
When was Miss Universe created?
Miss Universe was created in 1952.
When was The Universe in a Nutshell created?
The Universe in a Nutshell was created in 2001.
When was Electric Universe created?
Electric Universe was created in 1991.
