Date: Wed, 4 Nov 92 05:05:07 From: Space Digest maintainer Reply-To: Space-request@isu.isunet.edu Subject: Space Digest V15 #377 To: Space Digest Readers Precedence: bulk Space Digest Wed, 4 Nov 92 Volume 15 : Issue 377 Today's Topics: Dyson sphere/getting hit by a comet (2 msgs) Hammer and Feather Moon Experiment How to electronically detect X-RAYS??? (2 msgs) UN Space/Moon Treaty? VIDEOTAPE OF OCT 9 FIREBALL Welcome to the Space Digest!! Please send your messages to "space@isu.isunet.edu", and (un)subscription requests of the form "Subscribe Space " to one of these addresses: listserv@uga (BITNET), rice::boyle (SPAN/NSInet), utadnx::utspan::rice::boyle (THENET), or space-REQUEST@isu.isunet.edu (Internet). ---------------------------------------------------------------------- Date: 3 Nov 92 01:17:42 GMT From: Paul Campbell Subject: Dyson sphere/getting hit by a comet Newsgroups: sci.space To mangle two threads ... your dyson sphere will catch everything crossing it, it will get hit by every comet on its way in .... of course you probably had to clean out your oort cloud to build it ... Paul -- Paul Campbell UUCP: ..!mtxinu!taniwha!paul AppleLink: CAMPBELL.P "Potatoe" - Dan Quayle (spelling) "Who do you trust" - George Bush (grammer) ------------------------------ Date: 4 Nov 92 04:25:55 GMT From: "Michael V. Kent" Subject: Dyson sphere/getting hit by a comet Newsgroups: sci.space In article <1293@taniwha.UUCP> paul@taniwha.UUCP (Paul Campbell) writes: > > "Potatoe" - Dan Quayle (spelling) > "Who do you trust" - George Bush (grammer) "grammer" - Paul Campbell (spelling) Mike -- Michael Kent kentm@rpi.edu McDonnell Douglas Rensselaer Polytechnic Institute Tute Screwed Aero Class of '92 Apple II Forever !! ------------------------------ Date: Wed, 4 Nov 92 08:03:15 GMT From: Mark Brader Subject: Hammer and Feather Moon Experiment Newsgroups: sci.space > I remember some time ago there was someone on this newsgroup that wanted a > videotape of the astronauts dropping a hammer and a feather on the moon > ... they showed the tape of this experiment on this week's > episode of "Space Age" on PBS (the episode was titled "To the Moon and > Beyond"). Probably you can still catch some repeats of this episode ... And fans of Mr. snarfy, the conspiracy theorist, might like to time the drop. It's been long enough since I saw it that I don't remember myself how high he dropped them from; but here are some figures for 1/6 gee... seconds feet meters 0.1 0.0 0.0 0.2 0.1 0.0 0.3 0.2 0.1 0.4 0.4 0.1 0.5 0.7 0.2 0.6 1.0 0.3 0.7 1.3 0.4 0.8 1.7 0.5 0.9 2.2 0.7 1.0 2.7 0.8 1.1 3.2 1.0 1.2 3.9 1.2 1.3 4.5 1.4 1.4 5.3 1.6 1.5 6.0 1.8 -- Mark Brader "Fighting off all of the species which you SoftQuad Inc., Toronto have insulted would be a full-time mission." utzoo!sq!msb, msb@sq.com "Deja Q", ST:TNG, Richard Danus This article is in the public domain. ------------------------------ Date: 3 Nov 92 18:55:05 GMT From: Allen Wallace Subject: How to electronically detect X-RAYS??? Newsgroups: sci.electronics,sci.space,sci.space.shuttle,sci.physics In article <1992Oct31.170935.1393@cactus.org> Charles Thompson, thompson@cactus.org writes: >I am looking for a sensitive X-ray detector. >What is the best way to detect X-rays? I suggest using GM tubes. I see simple kits for $40 each in the back of electronics magazines. You would only need a single H.V. power supply for the array of tubes. -- --- root root@dtint.dtint.com Digital Technology Int. (801)226-2984 500 W. 1200 South, Orem UT, 84057 FAX (801) 226-8438 ------------------------------ Date: 3 Nov 92 19:04:33 GMT From: Allen Wallace Subject: How to electronically detect X-RAYS??? Newsgroups: sci.electronics,sci.space,sci.space.shuttle,sci.physics In article <1992Oct31.170935.1393@cactus.org> Charles Thompson, thompson@cactus.org writes: >I am looking for a sensitive X-ray detector. >What is the best way to detect X-rays? >Are scintillation/photodiode techniques used? I read in a CLARIX manual that "CdS ... photoconductors's sensitivity to steady light is ... equal to that of a photomultipler". Also, how does airport X-RAY machines work? -- --- root root@dtint.dtint.com Digital Technology Int. (801)226-2984 500 W. 1200 South, Orem UT, 84057 FAX (801) 226-8438 ------------------------------ Date: 4 Nov 92 03:19:34 GMT From: "Marc A. Boschma" Subject: UN Space/Moon Treaty? Newsgroups: sci.space stu5s33@bnr.ca (Robert Nychka) writes: >I don't have official E-Mail access, I'm limited to public posts. Is there >any way you can just post the info to this group? I was only interested in the replies you got...I too have an interest in this subject. >ROb Nychka ------------------------------ Date: Tue, 3 Nov 1992 21:08:43 GMT From: Tor Houghton Subject: VIDEOTAPE OF OCT 9 FIREBALL Newsgroups: sci.astro,sci.space Oct 9 of this year? Excuse me if I have been ignorant - I don't usually get the right hold of the right sources. Cheers, Tor. M -- ---------------------------------------------------------------------- email: torh@cogs.susx.ac.uk "Then we will wonder if machines will steal each others dreams." ------------------------------ End of Space Digest Volume 15 : Issue 377 ------------------------------