Return-Path: X-Processed-By: Virex 7 on prxy.net X-Real-To: stagecraftlist [at] theatrical.net Received: by prxy.net (CommuniGate Pro PIPE 4.2) with PIPE id 4572974; Sun, 03 Oct 2004 03:00:52 -0700 X-ListServer: CommuniGate Pro LIST 4.2 List-Unsubscribe: List-ID: Message-ID: From: "Stagecraft" Sender: "Stagecraft" To: "Stagecraft" Precedence: list Subject: Stagecraft Digest #151 Date: Sun, 03 Oct 2004 03:00:41 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Disposition: inline X-Spam-Status: No, score=-3.2 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.0.0-pre4 X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 3.0.0-pre4 (2004-08-04) on prxy.net X-prxy-Spam-Filter: Scanned X-TFF-CGPSA-Version: 1.4a3 For info, archives & UNSUBSCRIBE, see --------------------------------------------------- Stagecraft Digest, Issue #151 1. Fresnel himself by Judy 2. LDI by "Brandy Bitzer" 3. Re: Mythbusters Fresnel "Death Ray" by Michael Powers 4. Re: Mythbusters Fresnel "Death Ray" by Dale Farmer 5. Re: LDI by Herrick Goldman 6. Re: LDI by FREDERICK W FISHER 7. Re: LDI by Richard Niederberg *** Please update the subject line of your reply to use the subject *** line of the message you are replying to! Please only reply to *** one message subject in each reply. ---------------------------------------------------------------------- Message-ID: <415E884E.9080602 [at] post.tau.ac.il> Date: Sat, 02 Oct 2004 12:51:58 +0200 From: Judy Subject: Fresnel himself > > >My >recollection is that the man Fresnel was a french bureaucrat and did not >invent anything. He was responsible for the promotion of the lens. > Since every third page of my book on optics has Fresnel's name in it (usually attached to equations) I knew this couldn't be true, so I checked it out. Fresnel is one of the most important scientific figures who investigated light. He did a lot of mathematical calculation and experiment on light. He was convinced it was a wave in a time when most people thought it was particles, and his work did a lot to convince others. He did both theoretical and experimental work on diffraction and other wave phenomena. And he died when he was only 39! Here's a webpage somebody else already sent in: http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Fresnel.html And here is a quote from the webpage which makes him sound like a great guy (well worthy of immortalization in the theatre...) / the highest merit in personal achievement, performance of duty, and service to society. Serious, intent, haunted by thoughts of an early grave, Fresnel bound himself closely to these ideals, shunning pleasures and amusements and working to the point of exhaustion. Despite the urgency of everything he attempted, Fresnel was always attentive to detail, systematic, and thorough. In science no less than in politics he held tenaciously to his convictions and defended them with courage and vigour. ... he voiced outrage when the behaviour of others fell short of his own high ethical standards. At times this approached a rankling self-righteousness, but generally his contemporaries saw him as reserved, gentle, and charitable./ ------------------------------ From: "Brandy Bitzer" Date: Sat, 02 Oct 2004 08:04:26 -0500 Subject: LDI Message-Id: <20041002130426.2F3DC4BDA8 [at] ws1-1.us4.outblaze.com> Hello All... This year's LDI is looking great...I will be assisting with the Backstage Las Vegas Tour...I was wondering if anyone had plans to attend this year? This is my third year helping out at LDI Hope to see you all there. Brandy Bitzer Ligting Technician -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm ------------------------------ Date: Sat, 02 Oct 2004 09:55:54 -0400 From: Michael Powers Subject: Re: Mythbusters Fresnel "Death Ray" In-reply-to: Message-id: <1096725354.415eb36add558 [at] mail-www4.oit.umass.edu> References: Cosmo Catalano wrote: ................... Frankly, I was quite surprised that the reflector did not produce the necessary heat. ............... Cosmo, Maybe it was the size, total square feet of reflector, or in this case, lack of size?? I once read a Sci-Fi story in which a South American socer stadium with about 60,000 people, at high noon in summer, all tried to blind the ref after a bad call by using the mirror like plastic back of their programs to reflect the sun into his eyes. The result was the ref was instantly vaporized. What that had to do with the story I don't remember, the thought of the gimmick was obviously more interesting than the story. They did say they raised the temp to, what was it, 200F?? Maybe another row of reflectors would do it? I'm not up on thermo dynamics, I wonder if adding reflecting area would raise the heat potential in a linier or expotential manner?? Michael Michael Powers, Technical Director UMass Theatre Department 112 FAC West 151 Presidents Drive, Ofc.2 Amherst, Ma. 01003-9331 413-545-6821 voice 413-577-0025 fax mfpowers [at] theater.umass.edu ------------------------------ Message-ID: <415EC645.389D42F6 [at] cybercom.net> Date: Sat, 02 Oct 2004 11:16:21 -0400 From: Dale Farmer Subject: Re: Mythbusters Fresnel "Death Ray" References: Michael Powers wrote: > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > Cosmo Catalano wrote: > > ................... > Frankly, I was quite surprised that the reflector did not produce the > necessary heat. ............... > > Cosmo, > > Maybe it was the size, total square feet of reflector, or in this > case, lack of size?? I once read a Sci-Fi story in which a South > American socer stadium with about 60,000 people, at high noon in > summer, all tried to blind the ref after a bad call by using the > mirror like plastic back of their programs to reflect the sun into his > eyes. The result was the ref was instantly vaporized. What that had > to do with the story I don't remember, the thought of the gimmick was > obviously more interesting than the story. > > They did say they raised the temp to, what was it, 200F?? Maybe > another row of reflectors would do it? I'm not up on thermo dynamics, > I wonder if adding reflecting area would raise the heat potential in a > linier or expotential manner?? There was a solar power experimental plant that used this idea back in the 70s. Black body boiler up on a tower, in the middle of a field of steerable mirrors. They got it up to quite high temperatures, but the thing wasn't commercially viable. No idea if it still exists. --Dale ------------------------------ Message-Id: In-Reply-To: References: Date: Sat, 2 Oct 2004 11:50:11 -0400 From: Herrick Goldman Subject: Re: LDI I'll be there and maybe we can even try for a gathering although it's usually pretty tough in Vegas. I'll come up with a time and place sometime soon. Maybe we can Get Finney to reserve us the Bridge of The Enterprise for a party. He built the darn thing. -- Herrick Goldman Lighting Designer, NYC www.HGLightingDesign.com "To the scores of silent alchemists who wreak their joy in darkness and in light bringing magic to life, we bow most humbly. "-CDS ------------------------------ Date: Sat, 02 Oct 2004 11:28:34 -0500 From: FREDERICK W FISHER Subject: Re: LDI Message-id: <4f70a51fdd.51fdd4f70a [at] wiscmail.wisc.edu> I'm actually able to go this year, hope to there is a get together of the list people. Fred ----- Original Message ----- From: Herrick Goldman Date: Saturday, October 2, 2004 10:50 am Subject: Re: LDI > For info, archives & UNSUBSCRIBE, see > ---------------------------------- > ----------------- > > I'll be there and maybe we can even try for a gathering although > it's > usually pretty tough in Vegas. I'll come up with a time and place > sometime soon. Maybe we can Get Finney to reserve us the Bridge of > The Enterprise for a party. He built the darn thing. > -- > > Herrick Goldman > Lighting Designer, NYC > www.HGLightingDesign.com > > "To the scores of silent alchemists who wreak their joy in darkness > and in light bringing magic to life, we bow most humbly. "-CDS > ------------------------------ Date: Sat, 2 Oct 2004 18:53:42 -0700 Subject: Re: LDI Message-ID: <20041002.185353.3800.1.ladesigners [at] juno.com> From: Richard Niederberg Please keep me informed and 'in the loop', should there be a get-together Saturday night October 23rd. Thank You! /s/ Richard > I'm actually able to go this year, hope to there is a get together > of the list people. > Fred ________________________________________________________________ Get your name as your email address. Includes spam protection, 1GB storage, no ads and more Only $1.99/ month - visit http://www.mysite.com/name today! ------------------------------ End of Stagecraft Digest #151 *****************************