We know that atoms can neither be created nor destroyed. Then how is it possible that atoms were formed after about 400,000 years of the birth of universe?
We know that atoms can neither be created nor destroyed. Then how is it possible that atoms were formed after about 400,000 years of the birth of universe?
Who said that atom cannot be destroyed. Once an atom is disintegrated to form energy, it liberates huge amount of energy which is given by Einstein’s equation E = mc²
Even atom can be disintegrated to form another atom like in case of radioactivity. Here, an unstable atom emits alpha or beta rays to change it’s atomic configuration. Even when a stable atom is subjected to bombardment of alpha or beta particles, it may turn into unstable nuclei and may turn into other atom. In other words, the earlier atom now ceases to exist and a new one comes into being.
So, it is false to say that atom can neither be created, nor be destroyed.
The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began. As the theory goes, when the universe was born it underwent a rapid inflation and expansion. (The universe is still expanding today, and accelerating for unknown reasons). The CMB represents the heat left over from the Big Bang.
The universe began 13.7 billion years ago, and the CMB dates back to about 400,000 years after the Big Bang. That's because in the early stages of the universe, when it was just one-hundred-millionth the size it is today, its temperature was extreme: 273 million degrees above absolute zero, according to NASA.
Any atoms present at that time were quickly broken apart into small particles (protons and electrons). The radiation from the CMB in photons (particles representing quantums of light, or other radiation) was scattered off the electrons. “Thus, photons wandered through the early universe, just as optical light wanders through a dense fog,” NASA wrote.
About 380,000 years after the Big Bang, the universe was cool enough that hydrogen could form. Because the CMB photons are barely affected by hitting hydrogen, the photons travel in straight lines.
Who said that atom cannot be destroyed. Once an atom is disintegrated to form energy, it liberates huge amount of energy which is given by Einstein’s equation E = mc²
Even atom can be disintegrated to form another atom like in case of radioactivity. Here, an unstable atom emits alpha or beta rays to change it’s atomic configuration. Even when a stable atom is subjected to bombardment of alpha or beta particles, it may turn into unstable nuclei and may turn into other atom. In other words, the earlier atom now ceases to exist and a new one comes into being.
So, it is false to say that atom can neither be created, nor be destroyed.
The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began. As the theory goes, when the universe was born it underwent a rapid inflation and expansion. (The universe is still expanding today, and accelerating for unknown reasons). The CMB represents the heat left over from the Big Bang.
The universe began 13.7 billion years ago, and the CMB dates back to about 400,000 years after the Big Bang. That's because in the early stages of the universe, when it was just one-hundred-millionth the size it is today, its temperature was extreme: 273 million degrees above absolute zero, according to NASA.
Any atoms present at that time were quickly broken apart into small particles (protons and electrons). The radiation from the CMB in photons (particles representing quantums of light, or other radiation) was scattered off the electrons. “Thus, photons wandered through the early universe, just as optical light wanders through a dense fog,” NASA wrote.
About 380,000 years after the Big Bang, the universe was cool enough that hydrogen could form. Because the CMB photons are barely affected by hitting hydrogen, the photons travel in straight lines.
