What is Gamma: Definition and 711 Discussions

Gamma (uppercase Γ, lowercase γ; Greek: γάμμα gámma) is the third letter of the Greek alphabet. In the system of Greek numerals it has a value of 3. In Ancient Greek, the letter gamma represented a voiced velar stop /ɡ/. In Modern Greek, this letter represents either a voiced velar fricative or a voiced palatal fricative.
In the International Phonetic Alphabet and other modern Latin-alphabet based phonetic notations, it represents the voiced velar fricative.

View More On Wikipedia.org
Recent contents Top users
  1. G

    How far does a gamma beam go in the atmosphere?

    Hi, can someone tell me the extinction coefficient of a gamma ray in the atmosphere? How far does a gamma beam go in the atmosphere before its intensity reduces to half or to 1/e?
  2. K

    Gamma Ray Bursters: Cause of Short-Lived Flashes of Light

    What causes the short-lived, highly energetic, flash of light emitted by some black holes as they are created?
  3. A

    Explaining Alpha Beta & Gamma - Can Someone Help?

    i get what alpha is but i do not really get what betta and gamma is can someone please explain to me ? thanx
  4. C

    What are the Characteristics of Short Gamma Ray Bursts?

    can someone explain what a gamma burst is in simple terms... thanks.
  5. R

    Electromagnetic Bubble forming Gamma Ray Bursts.

    This Paper may be large, but it is a must for some pretty far reaching consequences for Cosmology. http://uk.arxiv.org/PS_cache/astro-ph/pdf/0312/0312347.pdf I will astounded if the paper is not seen in the near future as a remarkable paper of astronomical foresight and will be a paper...
  6. L

    Possible to evaluate the gamma function analytically?

    Does anybody know if it's possible to evaluate the gamma function analytically? I know it becomes a factorial for integers, and there's a trick involving a switch to polar coordinates for half values, but what about any other number? I have tried using a Taylor expansion and residue...
  7. S

    Upper Limit of Energy for Gamma Ray Bursts?

    It's embarassing to have to ask this, but I have never seen this issue discussed. Is there an upper limit on the energy of the gamma rays from the gamma ray bursts? Namely 1.022 MeV? Because any gamma ray of that energy or greater can and will produce pairs of electrons and positrons by...
  8. wolram

    Gamma Rays Origin: NASA, UMich, DOE Labs Confirm Death of Massive Star

    some news about the origin of gamma ray bursts, this may be old news to some.there have been many theories for the production of gamma rays, it seems now that the search is narrowing. http://www1.msfc.nasa.gov/NEWSROOM/news/releases/2003/03-041.html Using NASA's Chandra X-ray...
  9. Ivan Seeking

    Gamma rays may have devastated life on Earth: Newscientist.com

    http://www.newscientist.com/news/news.jsp?id=ns99994198
  10. I

    Proving the Gamma Function: Using Substitution and Integral Calculus

    Hello, can anyone please me here? I need to prove that int(x^a(lnx)^b.dx= (-1)^b/((1+a)^b+1)*Gamma(b+1) by making the substitution x=e^-y this is what I have done so far: x=e^-y -> y=-lnx x=0 -> y=-(-00) =+00 x=1 -> y=0 dy/dx = -1/x -> dx=-xdy =-e^-ydy then the integral...
  11. enigma

    Radioactivity is an emission of gamma particles

    This may be a dumb question: What is it about radioactivity that caused them to name it "radioactive"? All I was taught was that radioactivity is an emission of gamma particles, beta particles, or alpha particles. I don't remember anything about radio wavelength photons.
Back
Top