Threads Tagged with radiation Thread / Thread Starter Last Post Replies Views Can you make an educated guess on the amount of energy in the universe in the form of electromagnetic radiation... Y 07:47 PM dauto 3 179 General Physics does thermal radiation involve ultraviolet x ray and jamma ray or just heat of light...... Mar7-14 01:31 PM sophiecentaur 9 214 General Physics say you measured every particle which has entered a black hole say you measured every hawking radiation particle... Mar6-14 06:53 AM Bill_K 1 158 Astrophysics Sorry about my poor English. I heard Jupiter emits lethal amounts of radioactivity (I don't know what kind). I also... Mar3-14 02:26 PM MonkeyKid 5 256 Astrophysics The solution of Einstein's field equations for a simple black hole show a slowing of time as you get close to the... Feb27-14 11:44 AM PAllen 37 1,575 Special & General Relativity I was wondering what experiments or observations have shown that the cosmic microwave background radiation exists... Feb18-14 06:26 PM Chronos 1 334 Astrophysics 1. 6. A 100 W light bulb is designed to operate with it’s filament at 2000K. If the filament is a perfect... Feb18-14 02:30 PM DanD 5 154 Introductory Physics Homework 1. The problem statement, all variables and given/known data A cylinder of length 0.02m emits 100W and is at 2000K.... Feb16-14 12:26 PM dextercioby 1 127 Introductory Physics Homework Hi, I hope I get understood correctly, my question is seemingly simple: Why is ionization radiation( energetic... Feb11-14 06:17 AM Astronuc 8 525 Nuclear Engineering From what I understand, Hawking radiation results when one virtual particle (of the pair) falls into the black hole... Feb9-14 12:17 PM PeterDonis 1 270 Special & General Relativity http://www.bbc.co.uk/news/uk-england-cumbria-25975785 They have/had "above normal levels" at a perimeter detector.... Feb7-14 03:52 PM Hiddencamper 5 681 Nuclear Engineering I was doing my casual tuesday experiments class. Me and my 2 "coworkers" were given the task of creating a function... Feb6-14 12:01 PM ZapperZ 4 294 General Physics Hello! I've been working on this physics problem for a physics II course and I'm stumped. Maybe someone can assist?... Feb5-14 05:10 AM BvU 5 303 Introductory Physics Homework 1. The problem statement, all variables and given/known data The minimum wavelength observed in x-ray radiation is... Feb4-14 10:43 AM Adithyan 1 143 Advanced Physics Homework Hello! I'm not really into physics that much, and in school I didn't study it that much either, so this question will... Jan29-14 04:09 PM sophiecentaur 7 324 General Physics This post specifically queries the absorption, by matter, of (thermal) radiation which has been emitted from a source... Jan26-14 01:19 PM Arfur Bryant 39 606 Classical Physics I'm trying to figure out which layers of the sun emit different types of radiation For instance; I know that most... Jan25-14 03:05 PM mathman 2 655 General Astronomy Hi, I've tried several times to get my head around this, but every way I look at it Hawking Radiation doesn't seem... Jan22-14 04:48 PM Stonius 12 879 Quantum Physics Can someone help me on this: Hawking Bernstein radiation can cause a BH to evaporate. The second law of BH dynamics... Jan22-14 03:06 PM mathman 1 534 Astrophysics Hello, I have a question: Do stars have Van Allen Radiation? Thanks Jan18-14 08:36 PM nasu 3 820 General Astronomy 1. The problem statement, all variables and given/known data \mbox{Let} \ p(< \nu_{0}) \mbox{be the total energy... Jan15-14 05:40 PM TSny 1 244 Introductory Physics Homework Hey, as per i know pulsars emit EM radiation . . . Can anyone please explain the reason behind this in terms of... Jan12-14 02:49 AM Yashbhatt 2 408 General Physics Hi all I understand that at high frequencies, a twin lead Tx line has high radiation losses because the conductor... Jan9-14 11:02 AM sophiecentaur 1 309 Electrical Engineering Hello, I was wondering how I could go about finding the wavelength of light that would cleave the O-H bonds of a... Dec31-13 01:54 PM Woopydalan 4 631 Chemistry Since we can observe gravitational lensing and conclude that mass can affect the path of EM radiation it seems logical... Dec29-13 01:22 PM Jonathan Scott 1 735 Astrophysics Hi, please could someone help as I have got myself desperately confused with how radiation interacts with matter... Dec23-13 06:55 AM mikeph 9 664 General Physics So as I understand it Stephen Hawking and one other person I can't remember the name of worked on an equation to... Dec16-13 05:24 PM Vanadium 50 30 805 Quantum Physics I was just wondering if ionizing radiation can split water into hydrogen and oxygen? Thanks in advance :) Dec16-13 02:07 AM Rive 16 1,385 Nuclear Engineering Hi, If I were given a whole-body X-ray dose daily for many days (a year for example) What would be the highest... Dec14-13 10:31 AM mfb 2 1,228 Medical Sciences What shielding materials are best choices for reducing dose from: Neutrons: Gamma rays: Electrons: HCP: (heavy... Dec9-13 05:50 PM mfb 1 1,163 Nuclear Engineering $${\rho}({\lambda}) d{\lambda}=E({\lambda})*f({E(\lambda}))*D({\lambda})d{\lambda}$$ $${\rho}({\lambda}) d{\lambda}$$... Dec7-13 05:47 PM Outrageous 2 343 Classical Physics I am familiar with detectors and some lab equipment (Scintillation, geiger counters, ion chambers) I used during my... Dec6-13 05:43 PM Simon Bridge 1 1,090 Nuclear Engineering Hello, first of all, I must say that I am quite knowledge lacking in the thermodynamics topic, I am just seeking some... Dec6-13 01:03 AM Simon Bridge 17 771 Classical Physics 1. The problem statement, all variables and given/known data What is the meaning of the peaks (for example between... Dec5-13 09:30 AM Cookie97 0 337 Advanced Physics Homework 1. The problem statement, all variables and given/known data Consider the electromagnetic radiation inside a kiln,... Dec4-13 04:56 PM S_Flaherty 2 528 Advanced Physics Homework Hi, I an reading an interesting chapter of Feyman where he explains the basis of light-matter interaction with wave... Dec3-13 05:45 PM jtbell 1 381 Classical Physics Hi, I have to plan and carry out an experiment on thermal radiation as part of my physics lab module. The... Dec1-13 04:08 PM haruspex 5 447 Introductory Physics Homework This isn't really a homework question, but I felt it was better suited here than in General Physics. I'm looking for... Nov28-13 08:34 PM Simon Bridge 9 541 Introductory Physics Homework 1. The problem statement, all variables and given/known data A powerful research laser produces pulses of light,... Nov28-13 03:44 PM izzy93 0 330 Advanced Physics Homework Hello, I am working on a project that is attempting to use GM tubes to detect low levels of radiation emitted from... Nov27-13 06:39 PM THEMuffinMan7 0 472 General Physics