John Cuthber

http://en.wikipedia.org/wiki/How_to_Lie_with_Statistics

This is going to degenerate into a discussion of the definition of melting. There are basically two definitions. The general one where any sort of change takes place (their eyes met across a crowded room and her heart melted) which is fine for bad literature,, but short on rigour. The scientific one where a material changes phase without changing it's composition (and even that one can be less clear than it looks).

No, it could be a decomposition reaction or something.

Perhaps I should go to a linguistics forum and ask if the word "melt" can be applied to what happens to wood in a hydraulic press.

As you say, that is your opinion. Why do you expect me to justify it? Incidentally, was that opinion formed on the basis of some sort of controlled experiment? BTW, you say "RTX is nasty! i have been one the wrong end of that chemical to many times! " What were you doing at the time?

Sorry, but this is a bit confusing. "Lets take sodium bicarbonate, if you heat this you can end up with a liquid (if you do it slowly then you won't even notice the gas being given off) and then if you allow it to cool you'll end up with a similar looking solid. however if you pick it up you'll get caustic burns as its now sodium oxide which will dissolve to form sodium hydroxide." Sodium bicarbonate doesn't melt, it decomposes to steam, CO2 and sodium carbonate. Sodium carbonate is, for all practical purposes, stable to heat. It will melt at about 850 C It won't decompose to sodium oxide under any sensible conditions, but it will boil at about 1600C I think a better example would be sugar. If you heat it it sort of melts, but even before it does so it turns brown. That colour change is a chemical reaction. If you cool it down again, it doesn't turn white.

The water will have a vapour pressure of about 2.6 KPa and will boil if you try to drop the pressure below that. The effect of time should be small. It will boil quickly, then settle down. However as it boils it will get cold. If you then seal the system and let it warm up the pressure will rise.

Amides are generally quite difficult to hydrolyse. That's just as well for us since we are made largely of amides and water. The existence of the (legendary) vindaloo curry shows that the pungent principle present in chillis is stable to acid hydrolysis during cooking for a long time at high temperature. "The name Vindaloo is derived from the Portuguese dish "Carne de Vinha d' Alhos", which is a dish of meat, usually pork, with wine and garlic.[1] The dish was originally modified in Mumbai[citation needed] by the substitution of vinegar for the wine," from http://en.wikipedia.org/wiki/Vindaloo Possibly the strong taste of the lemon juice is responsible http://en.wikipedia.org/wiki/Counterstimulation

I think the phenoxy bit is the handle that binds to the receptor. From http://en.wikipedia.org/wiki/Vanillyl "A number of vanilloids, most notably capsaicin, bind to the Transient receptor potential vanilloid type 1 (TRPV1) receptor, an ion channel which naturally responds to noxious stimuli such as high temperatures and acidic pH.[1] This action is responsible for the burning sensation experienced after eating spicy peppers." This http://en.wikipedia.org/wiki/Resiniferatoxin is a spectacularly potent one, but has no amide group. What the lemon offers I don't know. Could be a specific antagonist; they do exist.

Looks like a software bug to me.

I thought it would be instructive to seek other opinions from the web. I found this http://www.physforum.com/index.php?showtopic=28571 which under the banner of "Crackpot claims New Discovery, without doing any heavy lifting" says things like "and for 3 installments of $19.95, you can have a veegtron too!! Discover new universes!! Solve the Dark Matter riddle!! Impress the girls!! There's nothing that the Veegtron cannot do!! just have you're mastercard or visa ready." and I have to say it's more plausible than anything from Victor. I think this thread has run its course and should be left to die peacefully in obscurity.

There's just no fun in that.

So you say "Duplication is due to the magnetism of color by: 1.- Atoms 2.- Veegtrones (particles that move the cell phone waves) In the rectangles we see that the colors were magnetizados and stretched." Do you have a better answer than saying that the Pixies did it?

Victor, you are missing the point. First, this experiment does not use a prism. It uses a diffraction grating- that's just dark parallel lines ruled very close together on a clear piece of glass. (you can make on from scratches on a bit of metal and the effect that you see with light reflected from a CD is also the same sort of thing). The central image in the picture is just a view of the lamp (It has nothing to do with any candles, so please don't waste time talking about candles. I assure you it works just fine with a candle as the light source). There are two spread out images of the lamp labelled as m=+1 and m=-1 If the picture had been taken slightly differently, there would be another pair of "rainbow" pictures of the lamp, even further out. (There might be others too, even further out) Please explain these four images (as I asked before). I'd like to know why they are spread out into spectra, why there are 4 of them and why they are where they are? The reason I ask is that I can explain it perfectly well using conventional physics. If your ideas don't explain it then your "theory" simply isn't as good as the conventional one.

Speaking of science Victor, could you answer the question I asked please?

Do you really think we didn't know that?

"Sir you said it, your paying down the principle," Strictly speaking, I'm not. http://en.wikipedia.org/wiki/Endowment_mortgage I'm investing in something else that will pay it off. Is that so different from a government investing in things like education and healthcare? Incidentally, note to US Govt; Increase income tax.

"We can't even predict when and where hurricanes will form and when and where they will land." Actually, from my point of view, we can. http://en.wikipedia.org/wiki/Hurricane_Alley http://en.wikipedia.org/wiki/Atlantic_hurricane_season As imperfect as it is, our model of the weather is already useful. Sure they need to refine it, but it already tells me where to avoid when booking a holiday. Finding that the model is more complex than we thought is a good thing. It still doesn't affect the fact that adding CO2 to the atmosphere will increase it's ability to absorb IR and so affect climate.

How good are you at practical chemistry?

What's the big deal? The US debt is of the order of 10 or 20 trillion. So is the GDP. The income is about equal to the debt (within a factor of 2 or so). I have a mortgage on my house that's for a bit more than my current income, and when I bought the place it was a debt of about 3 times my income. Nobody thinks that's a major problem because I can pay the interest (and the capital). The US can pay the interest and capital too. Why is the US so upset about being in debt? It's not as if they owe a lot of money.

Victor, if I paint a set of parallel lines on a piece of glass and pass a beam of light through it the light is split into different colours. There's a picture of the effect here, but it doesn't tell the whole story, there are actually 2 spectra on each side of the image (as well as the white one in the middle). http://en.wikipedia.org/wiki/File:Light-bulb-grating.png Can you explain these 4 images please?

100 KPa isn't a negative pressure. Anyway, shortly after the system cavitates, the water will evaporate and raise the pressure to the vapour pressure of water at that temperature.

My internet link might use UTC, but my computer is set to record and display times as BST at the moment (and something rather close to UTC in Winter). I don't use UTC explicitly; it just happens that it coincides with local time here in Winter. It has been recognised for ages that we need a standard time reference (UTC, or GMT before that) but we don't usually use it because we prefer something that tallies with the local sunshine. It's an arbitrary choice, but it's the on we have made; and you will struggle to get people to change it without some really solid reason..

A quick look on eBay found this. http://www.ebay.co.uk/itm/GRANT-FH15-10-80C-heater-water-circulator-pump-/180698328559?pt=UK_BOI_Medical_Lab_Equipment_Lab_Equipment_ET&hash=item2a1275adef#ht_500wt_1156 which is the sort of thing they use in labs. The temperature control is typically good to 0.1C if it's set up correctly. (other bands etc. are available.)

You could do it, the data sheet for the product says it's 260 watts.If your car battery has a capacity of 100 Amp hours at 12 volts it could store 1200 watt hours so it would run the steamer for about 4 or 5 hours but the efficiency of the inverter might take that down to 3 or 4 hours. You would need a bunch of car batteries and chargers to cover the working day. I suspect the gas would be cheaper too.