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Q: What wavelength should the astrophysicist look for to detect a transition?
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Continue Learning about Astronomy

When a scientist designs a space probe to detect life on a distant planet what kinds of things should it measure?

Things like contents of atmosphere, heat, etc.


What creates the phenomenon known as the red shift?

The expansion of space in all parts of our Universe. When a group of photons leave an object (like a super-nova in a distant galaxy), they have a certain wavelength, and a certain distance between the first photons from that super-nova and the last such photons. During their travel, the expansion of space causes the wavelength of the photons to increase (even if they interact with no matter whatsover in their travels), as well as the distance between the first photons to leave and the last photons to leave. If these photons travel for enough time (say, a few 100 million to a few billion years) before they reach a detector on our Earth, the increase in wavelength AND the distance between the first and last photons becomes measurable. The photons have a wavelength longer than they "should" have, and the time between the first photons to arrive and the last to arrive will increase. The increase in wavelength, as well as the increase in time for the super-nova to last, will be as predicted by Hubble's Law.


What is a red shift and what does it tell us?

A 'red shift' is the increase in the wavelength of light received from astronomicalobjects, compared to what we know the wavelength should be. It's called "redshift" because if the wavelength of some visible light is increased, the color of thelight changes in the direction of the color with the longest visible wavelength, whichis red. If the shift is really substantial, light that left a star at visible wavelengthsmay even red-shift completely out of the visible range, and arrive here as infraredradiation.The only mechanism we know of that can increase the wavelength of light ...without the light passing into a different medium ... is the receding (moving away)of the light source from us, and it's generally agreed that if the light we receive froman astronomical object is red-shifted, then the object is moving away from us. Thefaster the object is moving away from us, the greater the increase in the wavelengthof its light.This is a big deal in Astronomy and Cosmology. If it's true, then there have beenenough observations of red shift over the past hundred years to reveal the generalpattern that ALL of the distant objects in the universe are moving away from us, andthe farther from us they already are, the faster they're moving away. This is the basisof the statement you've heard that "the Universe is expanding".Notes:1) If thelight source ismoving toward us, then its light arrives here blue-shifted ... withshorter wavelengths than we know it had when it left the source. There's not much ofthat to be seen, and it's all coming from objects that are relatively close to us.2) Strictly speaking, the expanding Universe causes the "Cosmological Redshift"which is similar to, but different from, the "Doppler Effect".3) There is, in fact, another mechanism for producing a redshift. Strong gravitational fields can have this effect. Some astronomers used to arguethis was a possible explanation for the redshifts of some galaxies.However the consensus now is that it's the expansion of space that's by far the most likely cause of the redshifts of galaxies.


What do scientists think might cause the universe to stop expanding and collapse in the Big Crunch?

Not only are scientists unsure how the universe will end, they aren't even sure it will end at all. Several possibilities for the fate of our universe have been bandied about. They tend to have names such as Big Crunch, Big Rip and Big Freeze. Ultimately, space could collapse back in on itself, destroying all stars and galaxies in existence, or it could expand into essentially an endless void. It seems that knowing more about dark matter will give some insight into the answer. "The truth is that it's still an open scenario," said astrophysicist Steve Allen of Stanford University. "We certainly don't know for sure what's going to happen." On the brighter side, any eventuality will take billions or even trillions of years to occur, long after our great-great-great-great-great-great-grandchildren should be past caring.


Should people own territory in outer space?

No they should not.

Related questions

What wavelength lambda should the astrophysicist look for to detect a transition of an electron from the n equals 7 to the n equals 3 level?

1005 m


What wavelength should the astrophysicist look for to detect a transition of an electron from the n equals 7 to the n equals 3 level?

, Use Rydberg's Equation to solve for this problem, which is as follows: 1/wavelength = R((1/n2x )-(1/ny2 )) Where R is Rydberg's constant, 1.0974 * 107 m-1 And where nx is the lower energy state (n=1), and ny is the higher energy state (n=3). So, plugging in those values gives us the following calculations to be made: 1/(12)=1, and 1/(32)= 1/9, so (1) - (1/9) = 8/9. So, we get: 1/wavelength = (1.0974* 107 m-1)(8/9) = 1/wavelength = (.9754666667 m-1) = wavelength = 1/(.9754666667 m-1) = Wavelength = 1.025150355 * 10-7 m And, since wavelength is typically given in nanometers (1 nm = 1 * 10-9 m) when looking at hydrogren emission spectra, convert the 10-7to 10-9 by moving the decimal back two more places. So, The wavelength expected for light composed of photons produced by an n=3 to n=1 transition in a hydrogen atom is: 102.5150355 nm or, to three significant figures, 103 nm Hope I helped! I am an engineering student at the University of Arizona.


Should transition process be capitalized in a sentence?

In general, no, "transition process" should not be capitalized in a sentence.


What do you study in High school to became astrophysicist?

You will not specialize into astrophysics until later in your education, but you should take physics, chem, and every math course.


Does a fecal exam always detect worms?

It should detect anything other than heart worm.


Your computer will not detect a CD drive after you install it?

it should detect the CD when you put it in, If not, your CPU is screwed up


What is the Dimension of Wavelength?

The give-away should be the word "length" which is hidden in the word "wavelength". Wavelength has the dimensions of length, and is most often stated in meters or centimeters (radio), nanometers (light), etc.


How many different concluding transition words should you use in an informative or argumentative essay?

There is approximately 200 transition words


Which job is objectively better astrophysicist or game programmer?

If a person has the capacity to be either a successful astrophysicist or a successful game programmer, I would advise to choose the profession of astrophysicist, because it will prove to be more satisfying to advance basic human knowledge, than to provide yet another entertainment to the public, which is already drowning in entertainments. However, if your talents are better suited to game programming than they are to astrophysics, then naturally you should aspire to be a game programmer. It's always a good idea to do what you are good at doing.


The shortest distance between two points on a wave where the wave pattern is repeated is?

you should do your homework.... Mr. Lawrence and it's called wavelength :)....


Should be established early in a JCTD to best facilitate entry of the demonstrated technology into a formal acquisition program?

Transition IPT and a Transition Plan


What should be established early in a JCTD to best facilitate entry of the demonstrated technology into a formal acquisition program?

Transition IPT and a Transition Plan