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Everything posted by StringJunky
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One of the chemists might know a suitable oxidising chemical. As far as I could find out, UV accelerates the reaction with oxygen to cause yellowing.
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How big are the bits? You could get some cheap monofilament fishing line that is clear. 10lb breaking strain should do you.. Wrapping anything around the parts will lengthen the time to yellow. Polystyrene sheet is light, workable and and cheap. Some wide adhesive white to join the faces together. You could just use a white cotton sheet suspended even. Depends how many times you are going to do this, but anything you can find should be good enough to test the idea.
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If you have them free hanging off wire/string in front of the reflector that would be better, but, nevertheless, the idea of the reflector is provide more uniform coverage all over the items. The reflector wants to be as close as possible such that the rear of the items is not in shadow. if you suspend them, any breeze will cause them to rotate.
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Put them on a flat white surface with a flat white background reflector. You don't want to cover them with clear plastic or glass because that filters some of the UV.. Orientate the reflector so that it captures most of the sun through the day.and turn the items around and over everyday..
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I know. They've got the same problem that EU is slowly concocting for itself.. It's only the military that gives the US the illusion of a single country.
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Every day, 20 US Children Hospitalized w/Gun Injury (6% Die)
StringJunky replied to iNow's topic in Politics
"If you take them away from the good people, the bad people will still have them, therefore, the problem is still there.". I've just seen this argument used, in a guitar forum, in relation to possible restrictions on possessing ivory products in NYC.to try and stem the flow of elephant and rhino killings. -
The states need to be treated like our counties and critical decisions made by federal government. Certain things need harmonising across all states, otherwise you'll always have rotten apples at the bottom of the barrel perpetuating the problem and spoiling the rest; "If they can do it, so can we".
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Yes, presenting a firearm in any confrontation seems to be the first resort rather the last. The first step is to have a national database that all state police forces must log all incidences of fatality by law. I can't believe they don't do this already. How can any conclusions be made without centrally collating the data?
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Yes, and no one's been killed by a policeman for nearly 18 hours.
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Suppression of new ideas in science is the norm not the exception.
StringJunky replied to jeremyjr's topic in Speculations
Show us some recent examples of suppression by the scientific establishment. -
Don't hold back, iNow, tell it like it is. It seems reasonable to try and understand the anomaly in America by comparing to the Canadians.
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Given that Canada and the US are neighbours, there is a jarring difference. What elements of Canadian life/law is different from the American way to cause this difference?
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Questions regarding human microbiota
StringJunky replied to HenryLewis's topic in Ecology and the Environment
Yes, our full species name is: Homo streptostaphlyloenteroccocolactobifidosapien. sapien -
Question about relativity as a means of time travel.
StringJunky replied to Dream_'s topic in Relativity
You don't know until you ask. -
Question about relativity as a means of time travel.
StringJunky replied to Dream_'s topic in Relativity
It doesn't matter what process you use as a standard, everything is affected. Clocks are used because scientists can more easily see and measure the difference in the size of the gap between the ticks.. -
You nailed it. :They don't even need to shed a drop of blood with drones. I think in a civilised nation like America, the pen, is much more often, mightier than the sword.
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People just like guns, Phi. The 'protection' is tangible and available on demand. One thought struck about how laughable a patchwork militia against the US military machine is: consider that members of the old Eastern Bloc have asked for military hardware from the US military to manage problems with Russia. Not even most countries have the military capability of the US, so what chance do some guys with manual firearms think they have? Pathetic.isn't it, really? Somebody really needs to hammer this home to the 2nd Amendment worshipping section of the electorate,
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You want to defend yourself against your fellow Americans... God bless America! It shows a lack of faith and trust in your fellow citizens. This is why your system is safe, in the long run, because people can democratically become part of the system and keep it in check.
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I find it absurd to even consider the US government acting that way. I can't see how the machinery you have in place would allow it...it's too mature with plenty of negative feedback mechanisms.
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can a strictly steady repeatable diet delay (or even prevent) aging?
StringJunky replied to minaras's topic in Speculations
If you reach 120, that'll do. I think people in Okinawa, Nippon live on a relatively calorie-restricted diet, they have a high proportion of centenarians apparently. -
Why does black reflect better than white?
StringJunky replied to Gweedz's topic in Classical Physics
Thinking about it's not simple and straightforward it, there's things to take into consideration. Although I haven't read it all through and comprehensively, Feynman's Strange Theory of Light and Matter deals with it ....it's quite an involved subject. IIRC. -
Why does black reflect better than white?
StringJunky replied to Gweedz's topic in Classical Physics
When you measure the light intensity on a dark shiny surface and then measure the black surface with ambient light on it, the difference in luminosity between the two is greater than the same two measurements on a shiny white surface. What this means is that a greater range of tones (contrast,) from dark to light, can be reflected by a shiny black surface. Think about it, in white you've got a range of ambient-lit white to very bright specular white highlights vs jet black to very bright specular highlights which are white. -
Double it, treble it, quadruple the numbers, the UK statistics still pale next to the US's.
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Obama is in the same place we've just been discussing: