My topic is on Cosmic Microwave Background Radiation (CMBR). It is a really low glow of light that fills the Universe. It could only be detected by using a radio telescope. When you look up at the night sky all you could see is the stars and the darkness behind it so when you use a radio telescope you could see some kind of glow in the sky instead of blackness. It is an afterglow made by the Big Bang and it left the CMBR behind as evidence. Long ago before the stars and planets were formed, the Universe was smaller, hot, and had a glow inside of it. The Cosmic Microwave Background Radiation was created in the Recombination Era when the radiation cooled down and when the Universe started expanding.
CMBR has all kinds of names like: 3 Degree Kelvin Background Radiation, Cosmic Background Radiation, and Microwave Background. It has names likes these because the radiation is like a black body and its’ temperature is less than three degrees Kelvin like about 2.76K. It is cool enough for electrons and protons to recombine into hydrogen atoms. Right now the temperature is about 2.725°. “… If we could see microwaves, the entire sky would grow with a brightness…” (http://map.gsfc.nasa.gov/universe/bb_test_cmb.html). “The reason why we can still see Cosmic Microwave Background Radiation is because; the cosmic microwave background does not originate with the big bang itself. It originates roughly 380,000 years after the big bang, when the temperature dropped far enough to allow electrons and protons to form atoms. When it was released, the cosmic microwave background wasn’t microwave at all-the photons had higher energies. Since that time, they have been red shifted due to the expansion of the universe, and are presently in the microwave b...
... middle of paper ...
...e. I got this from all of the websites that I read for the essay so far.
There is a map of the cosmic microwave background radiation and it sort of looks like an oval on its side and there are bright colors inside of it and the colors are like a bright pink, red, dark blue and light blue but they are just scattered all over in the inside of it. They are supposed to represent the hot and the coldness of the cosmic microwave background radiation. The red color on the CMBR is like the lowest energy so it’s the coolest, the bright pink one has like a medium low energy and it’s cold but not that cold, the dark blue has like a medium high energy and so it has a warm temperature, and the last color is the light blue color and it has the hottest temperature and it’s energy level is the lowest. I got all of my information on http://cmb.physics.wisc.edu/tutorial/cmb.html
The appeal in this essay is very obviously seen throughout its entirety. Neem uses a
The answer to this last question is the expansion of the universe. According to this theory the subject moves away from us, which makes the light that comes to us has become a long wavelength. This means that our eyes can not see, but which can be detected by other physical instruments that identify it as the famous cosmic background
For many years researchers have endeavoured to enhance current methods in cervical screening which utilises the Papanicolaou smear (also known as a Pap smear). Limitations in the smear have caused major emphasis to increase sensitivity and specificity whilst also creating an automated screening procedure. The Pap smear was initially introduced in the context of cervical screening in the detection of pre-cancerous lesions of the cervix in 1940’s (Koss, 1989). Cervical screens are vital as research has shown 90% of women with invasive cervical carcinoma could be prevented by finding any lesions early (Grace. et al. (2001). Cervical screening in the UK presented with an annual reduction of 7% but the Pap smear also possesses many limitations such as high error rates (Graff. et al. 1987) Figure 1.
Although carbon stars are the reddest of the red stars, there are different levels of red in these stars. Astronomers determine a star’s redness by observation and simple math. They measure the star’s magnitude through blue (B) and visual (V) filters. Then they subtract the visual magnitude from the blue. This leaves a number designated B-V called the color index. The more positive the color index, the redder the star is.
b. Much of the chapter is a long explanation of how whites have brutalized nonwhites (pp.98-101). Difference between cynical and realist.
A Lyman alpha blob is a giant cloud of gas that expands because of heat. The largest Lyman alpha blob looks like a giant green jellyfish and is located in the Aquarius constellation. This Lyman alpha blob is 200 million light years wide. It is known that the largest Lyman Alpha Blob was formed 12 billion years ago. Some scientists believe that the Lyman Alpha Blob may hold the answers to how galaxies are formed. There are at least 100 billion galaxies that exist in the universe that we can discover. Some of them are even 10 to 20 times bigger than our Milky Way. When galaxies collide with each other they become one big
Men In Black is a secret organization of people who do their best in saving the world. The people of MIB are specially trained to save the world from aliens who try to destroy the world. The story is about two people named, Kay and Jay, who save the world from an alien bug, named Edgar. Jay was recruited into the organization, after meeting Kay. The organization is made up of men, women, and aliens.
A spectrometer is used to measure the movement of distant galaxies. The spectrometer can measure the type of atoms the light was produced from, how bright the light is, and if the light is stretched or compressed. The measurements obtained with spectrometers show that distant galaxies are moving away from earth and the more distant the galaxy the faster it is moving away form earth. There are stars known as “Cepheid variables” which change in brightness relative to the distance from the viewer. The distance if these stars can be determined from the brightness that is observed. Some light that is observed is “red-shifted’. This occurs when the wavelength of the light is longer, the lengthening of the wavelengths happens because the galaxy or star that is producing the l...
Big Bang Theory – presupposes that the vast universe grew out of something where all matter and energy were compressed to infinite density and heated to trillions of degrees (a beginning which was an immensely small particle of high-density state. The four basic forces of nature – gravity, electromagnetism, strong and weak atomic forces – were unified in that tiny particle. This particle exploded into a great fire ball releasing the basic forces. Rapid expansion took place and then the fire ball started to cool and slow down.
The Big Bang Theory is the approved model that scientists use to describe the beginning and original evolution of the universe. The Big Bang created all of the matter and energy in the universe, including hydrogen and helium. A few of the light atoms were forged into the cores of stars, over billions of years, or through violent explosions of supernovae
The big bang theory reveals the beginning of the universe. It states that the Universe was formed about 14 billion years ago for a giant explosion of very dense and hot matter which then expanded and as it expanded, it started to cool down by going through different transitional phases. Since, it has been expanding.
13.8 Billion years ago, long before the creation of the popular television show, The Big Bang Theory occurred and is now the most widely recognized cosmological model for the universe. The Big Bang theory is an attempt to explain how the universe we know today began. Over the years, numerous discoveries and research have revealed that our universe did have a beginning, and that there was nothing before the Big Bang occurred. Throughout history there have been other theories as to how our universe began, though the Big Bang still prevails. One of the most exciting parts about the universe is a vast and fascinating place and there are even new discoveries still being made today. The Big Bang theory is widely regarded as the most likely scenario
The big bang theory has evidence to support it. An example of this evidence is the cosmic microwave background. The cosmic microwave background was discovered in 1964. The cosmic microwave background is radiation left over from the beginning of the universe or the big bang. This background is important because the radiation is the type of radiation that was seen at the beg...
Throughout the mid-20th century, the Big Bang theory and the steady-state theory dominated scientific thinking about the origin of the universe; however, discoveries in the1960s dealt a serious blow to the steady-state model. The discover of radiation in microwaves hurt the steady-state theory. Following World War II, Martin Ryle led a study at Cambridge in which he tested over 2,000 different radio sources from outside the Milky Way, and he concluded that the different radio sources showed a different distribution, thus supporting the Big Bang theory (“Big Bang” 1). In the early 1960s, Robert Dicke of Princeton University verified Gamow’s idea that there was a microwave background in the sky consistent with an initial explosion (Cowen, “Journey” 394). Further support for the Big Bang model came in 1963 when two scientists
The scientists didn't stop here. In their desire to better understand the universe, they designed The Next Generation Space Telescope (NGST) or the James Webb Space Telescope (JWST) that has been planned for launching in 2018. It is designed to make observations in the visible to the mid-infrared part of the electromagnetic spectrum.