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I have a Canon Powershot A620 camera. I want to use its continuous shooting function (which requires me to always have the shutter button depressed) for longer than I'm willing to stay with the camera. How do I jam the shutter button in the depressed position? (Of course, I need to be able to restore the button back to normal!) -- Bowlhover 06:54, 26 August 2006 (UTC)
Blutack Gaffer Tape Ohanian 08:29, 26 August 2006 (UTC)
is this possible to transform the energy of friction of shoes to our usable energy source to charge mobile or like that any other —Preceding unsigned comment added by 202.56.224.18 ( talk • contribs)
In theory, the heat differential produced by friction could allow for the generation of small amounts of electricity. However, it's also impractical with current technology. There are other ways to derive electricity from walking, however, as mentioned above. StuRat 09:05, 26 August 2006 (UTC)
I remember reading a while ago about some device that could be somehow incorporated into your pants legs, so that when you walked, a small electrical current was generated - possibly by inducing an electrical current (one leg) with a moving magnetic field (other leg). My memory's a bit scratchy on the details. BenC7 10:43, 26 August 2006 (UTC)
Friction isnt energy. Therefore cannot be converted into other energy. Philc T E C I 12:39, 26 August 2006 (UTC)
To generalize that answer, if you want to increase the energy output of a system, you must increase the input. Therefore, nullifying the point of increasing the output in most cases. Philc T E C I 17:25, 26 August 2006 (UTC)
I've noticed something in the last few years: If my field of vision is dominated by one colour (say, blue) for a period of time and then if it stops being so dominated, I (temporarily) see everything with a tint that's around the opposite of the original colour; the strength depends on how long the domination went on for. What is this called, and is it something normal or should I have my eyes examined? CameoAppearance 11:39, 26 August 2006 (UTC)
Hi!
I was just wondering what is the shortest known life span of an animal (and by that I'm including insects)? --
Fir0002
12:42, 26 August 2006 (UTC)
Note that many single-celled plants and animals which reproduce by mitosis (splitting in two) are excluded from this question, because they don't have a defined "life span", for two reasons:
1) Since both "daughter cells" are identical to the parent (except in cases of mutation), reproduction doesn't appear to constitute death of the parent. Thus, one could argue that the age of any individual is the age of the entire species, or perhaps strain, of such single-celled organisms.
2) Simple one-celled plants and animals (and some multi-celled, as well) don't appear to have a programmed death age, unlike more complex organisms, like us.
What you could compare, I suppose, is the average time from mitosis to mitosis, and call that a "life span". StuRat 19:37, 26 August 2006 (UTC)
I am trying to find the temperature that Salvinorin A vaporises so that it can be inhaled. The article has the melting point, but not the boiling point. -- Crazy Wolf 18:53, 26 August 2006 (UTC)
Hmm, I found a source stating that the temperature is around 300 C, and that others have had success vaporizing it. But it wasn't a particularly reputable sourec. If anyone sees anything reputable, I'd appreaciate them dropping a link. -- Crazy Wolf 19:00, 26 August 2006 (UTC)
Daniel Siebert at www.sagewisdom.org suggests in his FAQ vaporizing at 275 C. I believe he's one of the experts in the field of Salvia Divinorum research. He is one of the few people who has been capable of reproducing salvia plants from seeds and collects genetically diverse strains (the majority of plants around are actually clones).
How can I remove packing tape adhesive from a piece of furniture that I don't want adhesive on? The tape has been ripped off, but it is still really sticky. I want this in science, not misc, becuase this is actually a chemistry question! — Mac Davis] ( talk) ( Desk| Help me improve)
Limonene spray removes all sticky adhesives and smells better than turps or whatever. Eh-Steve 18:27, 27 August 2006 (UTC)
I once had a similar chore, and borrowed a series of solvents from a chemist and an artist. What is desired is to soften the adhesive without removing the finish. TEST ON A SMALL INCONSPICUOUS AREA! Neither Wikipedia nor we will be liable for any damage to readers, their pets, children or neighbors or their furniture for ill effects of solvents. Use safety glasses, chemical-proof gloves, plenty of ventilation, keep away from flames, etc etc don't be stupid in your experiments. The furniture finish might be lacquer if it is fine furniture(dissolves easily in many solvents). It might be shellac (dissolves in alcohol and many other solvents)if it is old cheap furniture. It might be polyurethane if newer and for informal use. Polyurethane is very resistant to many solvents. If you are lucky, the finish will be polyurethane. Lacquer thinner might selectively remove adhesive from polyurethane. Mineral spirits is an old standby for cleaning varnished furniture. Edison 15:13, 28 August 2006 (UTC)
< August 25 | Science desk archive | August 27 > |
---|
| ||||||||
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions at one of the pages linked to above. | ||||||||
I have a Canon Powershot A620 camera. I want to use its continuous shooting function (which requires me to always have the shutter button depressed) for longer than I'm willing to stay with the camera. How do I jam the shutter button in the depressed position? (Of course, I need to be able to restore the button back to normal!) -- Bowlhover 06:54, 26 August 2006 (UTC)
Blutack Gaffer Tape Ohanian 08:29, 26 August 2006 (UTC)
is this possible to transform the energy of friction of shoes to our usable energy source to charge mobile or like that any other —Preceding unsigned comment added by 202.56.224.18 ( talk • contribs)
In theory, the heat differential produced by friction could allow for the generation of small amounts of electricity. However, it's also impractical with current technology. There are other ways to derive electricity from walking, however, as mentioned above. StuRat 09:05, 26 August 2006 (UTC)
I remember reading a while ago about some device that could be somehow incorporated into your pants legs, so that when you walked, a small electrical current was generated - possibly by inducing an electrical current (one leg) with a moving magnetic field (other leg). My memory's a bit scratchy on the details. BenC7 10:43, 26 August 2006 (UTC)
Friction isnt energy. Therefore cannot be converted into other energy. Philc T E C I 12:39, 26 August 2006 (UTC)
To generalize that answer, if you want to increase the energy output of a system, you must increase the input. Therefore, nullifying the point of increasing the output in most cases. Philc T E C I 17:25, 26 August 2006 (UTC)
I've noticed something in the last few years: If my field of vision is dominated by one colour (say, blue) for a period of time and then if it stops being so dominated, I (temporarily) see everything with a tint that's around the opposite of the original colour; the strength depends on how long the domination went on for. What is this called, and is it something normal or should I have my eyes examined? CameoAppearance 11:39, 26 August 2006 (UTC)
Hi!
I was just wondering what is the shortest known life span of an animal (and by that I'm including insects)? --
Fir0002
12:42, 26 August 2006 (UTC)
Note that many single-celled plants and animals which reproduce by mitosis (splitting in two) are excluded from this question, because they don't have a defined "life span", for two reasons:
1) Since both "daughter cells" are identical to the parent (except in cases of mutation), reproduction doesn't appear to constitute death of the parent. Thus, one could argue that the age of any individual is the age of the entire species, or perhaps strain, of such single-celled organisms.
2) Simple one-celled plants and animals (and some multi-celled, as well) don't appear to have a programmed death age, unlike more complex organisms, like us.
What you could compare, I suppose, is the average time from mitosis to mitosis, and call that a "life span". StuRat 19:37, 26 August 2006 (UTC)
I am trying to find the temperature that Salvinorin A vaporises so that it can be inhaled. The article has the melting point, but not the boiling point. -- Crazy Wolf 18:53, 26 August 2006 (UTC)
Hmm, I found a source stating that the temperature is around 300 C, and that others have had success vaporizing it. But it wasn't a particularly reputable sourec. If anyone sees anything reputable, I'd appreaciate them dropping a link. -- Crazy Wolf 19:00, 26 August 2006 (UTC)
Daniel Siebert at www.sagewisdom.org suggests in his FAQ vaporizing at 275 C. I believe he's one of the experts in the field of Salvia Divinorum research. He is one of the few people who has been capable of reproducing salvia plants from seeds and collects genetically diverse strains (the majority of plants around are actually clones).
How can I remove packing tape adhesive from a piece of furniture that I don't want adhesive on? The tape has been ripped off, but it is still really sticky. I want this in science, not misc, becuase this is actually a chemistry question! — Mac Davis] ( talk) ( Desk| Help me improve)
Limonene spray removes all sticky adhesives and smells better than turps or whatever. Eh-Steve 18:27, 27 August 2006 (UTC)
I once had a similar chore, and borrowed a series of solvents from a chemist and an artist. What is desired is to soften the adhesive without removing the finish. TEST ON A SMALL INCONSPICUOUS AREA! Neither Wikipedia nor we will be liable for any damage to readers, their pets, children or neighbors or their furniture for ill effects of solvents. Use safety glasses, chemical-proof gloves, plenty of ventilation, keep away from flames, etc etc don't be stupid in your experiments. The furniture finish might be lacquer if it is fine furniture(dissolves easily in many solvents). It might be shellac (dissolves in alcohol and many other solvents)if it is old cheap furniture. It might be polyurethane if newer and for informal use. Polyurethane is very resistant to many solvents. If you are lucky, the finish will be polyurethane. Lacquer thinner might selectively remove adhesive from polyurethane. Mineral spirits is an old standby for cleaning varnished furniture. Edison 15:13, 28 August 2006 (UTC)