On Tue, 22 Feb 2005, Andreas Tille wrote: > Hi, > > my former Laptop had no internal WLAN card so I was safe that it is no > source of any radio frequencies.
Um? Actually...., you know your 1.4GHz machine? It emits 1.4GHz, as well as every harmonic above - 2.8, 4.2, 5.6,.... Ghz. And if you are only executing an instruction every n clock cycles, then you also emit at 1.4/n, 1.4*2/n, 1.4*3/n,.... Ghz. So your laptop emits a whole mash of radio frequencies (you can almost call it microwave, actually). You can imagine that if you want to put a cluster at a radio telescope, you have to enclose the entire cluster and air conditioner in a faraday cage. -- TimC -- http://astronomy.swin.edu.au/staff/tconnors/ Anyone seeking the "Relativistic Quantum Mechanics" soft option course, may wish to leave now. -- Intro lecture to RQM -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
