williams@kirk.DEC (John Williams 223-3402) (06/05/85)
The time traveler travels close to the speed of light in relation to the inertial frame. He travels into the future. If the inertial frame travels close to the speed of light relative to the time traveler ( switching frames ), then the inertial frame increases in mass and the effect is preserved. A wave that is higher in energy than gamma is cosmic radiation. For the most part, they travel through practically everything. Astronomers have found that there is a uniform background intensity for cosmic radiation, which they believe to be remnents of the Big Bang. John Williams
kneller@ucsfcgl.UUCP (Don Kneller%Langridge) (06/06/85)
In article <2500@decwrl.UUCP> williams@kirk.DEC (John Williams 223-3402) writes: > A wave that is higher in energy than gamma is cosmic radiation. >For the most part, they travel through practically everything. >Astronomers have found that there is a uniform background intensity >for cosmic radiation, which they believe to be remnents of the Big >Bang. > John Williams I thought it was low energy (~ 3K) background radiation. Due to expansion of the universe, any remnants from the Big Bang are all long wavelength, low energy photons. Don Kneller
chrisa@azure.UUCP (Chris Andersen) (06/09/85)
> A wave that is higher in energy than gamma is cosmic radiation. > For the most part, they travel through practically everything. > Astronomers have found that there is a uniform background intensity > for cosmic radiation, which they believe to be remnents of the Big > Bang. > John Williams Ahem, background radiation is much, *MUCH* lower then gamma rays.
mike@wuphys.UUCP (06/12/85)
> A wave that is higher in energy than gamma is cosmic radiation. > For the most part, they travel through practically everything. > Astronomers have found that there is a uniform background intensity > for cosmic radiation, which they believe to be remnents of the Big > Bang. > John Williams Cosmic rays are charged PARTICLES. The energy range beyond gamma rays in the EM spectrum is more gamma rays. Cosmic rays are things like protons and Carbon nuclei. Yes indeed some of them have been measured at energies up to 10^21 eV and there is some contamination of the experiments from gamma rays at comparable energies, but those gamma rays are not cosmic rays. Before anyone quotes me their whiley poster (or better yet Reed Richards of the Fantastic Four), EM radiation may have been called "comic" at one time, but current usage is to reserve cosmic rays to charged particles. I think I can speak with some authority about this since I just finished my dissertation on cosmic rays at energies up to 50 TeV last week and my PhD final orals are in 9 days. Mike Jones Cosmic Ray Physicist Physics Dept. Washington University St. Louis MO 63130 ihnp4!wuphys!mike