Question:
diffraction pattern-- can somebody explain ?
aparna
2010-10-19 11:29:10 UTC
a diffraction pattern is obtained using a beam of red light. What happens if the red light is replaced by blue light?
the answer given in my book is -- diffraction pattern becomes narrower and crowded together.
it doesn't offer any explanation for this answer.
folks, could u help me the concept behind this answer?
Three answers:
zener
2010-10-21 03:46:13 UTC
The distance between two consecutive diffraction bands depends on the wavelength of light we are using, smaller is the wavelength the closer will be the bands.Blue light has smaller wavelength compared to red light.
anonymous
2016-04-22 22:35:26 UTC
Good question. This is not to defend the present-day political view called Creationism which asserts that the Bible says that the universe and living things were created in 24-hour days a few thousand years ago, but you should know that, in fairness to the Bible record, the Bible clearly allows an indefinite amount of time for the creation of the universe in its opening words in Genesis 1:1 & 2. In verse two, if plainly says that 'darkness' was over the earth, not the universe or heavens. The following four "days" do not use the Hebrew word for "create", but "make", and apparently deal with the clearing of a cloud cover, 'making' first light, then sun, moon and stars visible in the sky. And Gen. 2:4 clearly shows that the "days" were not the 24-hour variety, calling all seven "days" ONE "day". (There is an accurate, modern-English "Bible online" at the Watchtower Bible and Tract Society's website (but if I include the link, Yahoo refuses to accept my post) if you don't have one handy, but it's always good to check your own, too.) The Bible is unnecessarily getting a bad rap in all of this... Best regards, Mike
harsha
2010-10-19 11:50:38 UTC
diffraction is nthing but bending of waves...let us consider a wave travelling..if an obstrucle is kept in path of wave...bending of wave takes place..hence wave pattern beomes narrower..


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