Archived posting to the Leica Users Group, 2001/05/31
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Friends, Warning! I messed up a roll of 120 film big time by ripping off film from the reel. Lots of fog, maybe because of the longer strip? MJK - --Love is kind. - ---------- >From: Jim Brick <jim_brick@agilent.com> >To: leica-users@mejac.palo-alto.ca.us >Subject: [Leica] RE: film tape glue flash >Date: Thu, May 31, 2001, 4:40 PM > > In order for the flash from the tape to in any way fog your film, you would > have to have film with a 10,000,000 ISO. > > And it is "not" static electricity. It is atoms giving off light energy > (electron valence jump) when the glue molecules are ripped apart. This is > "electroluminescence" and is caused by the movement of electrons within a > substance from more energetic states to less energetic states, giving off > cold light as the energy medium. It is a minuscule amount. > > Jim > > > At 03:23 PM 5/31/01 -0400, you wrote: >>I too have seen it and it is static electricity. This is why I always keep >>a pair of scissors around to cut the tape rather then rip it. >> >> -----Original Message----- >> From: Paul Chefurka >> Sent: Thursday, May 31, 2001 2:24 PM >> To: 'leica-users@mejac.palo-alto.ca.us' >> Subject: RE: [Leica] Mistake #1487 >> >> Yep. It's static electricity, and it happens all the time when you >>tear tape off a plastic surface. I've never seen it damage a film. >> >> Paul >> >> -----Original Message----- >> From: V8PWR@aol.com [mailto:V8PWR@aol.com] >> Sent: Thursday, May 31, 2001 1:18 PM >> To: leica-users@mejac.palo-alto.ca.us >> Subject: Re: [Leica] Mistake #1487 >> >> I've noticed something strange when I roll some films for >>developping . >> When I tear the green sticker , attaching the end of film to the >>reel , >> it flashes a little bit , just like a short spark . >> Weird and scary for the emulsion ! >> Anyone noticed the same ? >> >> JO GOODTIMES -FRANCE/ AIRBORNE RADAR TECH / LIVE FREE OR DIE >> will soon walk with mud covered combat boots... >