I need grade level information on color absoption. I need to know what colors absorb the most heat, what is heat energy, why the absorb heat, and anything else you could find for heat energy and color absorption. Please post the site name or the actual information here. Thank you!
217782
Again, learn to use wikipedia. \n\nThe first link is slightly harder to understand - added another wiki page you can access from the first, in case you didnt see it.
44892
Do you mean you added coloured powder?\n\nAny chemical added to water will affect the evaporation rate slightly, and so the different chemicals to give different colours will make a bit of difference.\n\nThe other thing will be how much energy different colours absorb - for example, black is good at abosorbing heat, whereas white tends to reflect heat. So the darker colours will have abosorbed more energy, heating the water quicker and causing more evaporation.
354360
I got my Ch.E. this last May and I remember having trouble with Heat and Mass Transfer.  I was lucky enough to have a REALLY good professor who could teach anything to anyone!  The book we used was Incropera & Dewitt "Fundementals of Heat and Mass Transfer".  I thought it was a pretty good book.  You may be able to find it around.\n\nYou could also try getting help from upperclassmen.  At the school I went to (Minnesota Duluth) there was a lot of cooperation between students.\n\nI don't think there are any websites that would clearly and thoroughly explain this subject to you.  An entire semester ins't even enough to fully understand it!
414719
Try this - you'll be surprised how many people have a degree of colour-blindness without realising\n\nhttp://128.121.139.89/SWF/ColorBlind21.swf
505988
Did you measure the absorbance of a standard in addition to the unknown sample?\n\nIf so, you could plug the values into (As / Au) = (Cs / Cu)\nWhere\nAs = Absorbance of the Standard\nAu = Absorbance of the Unknown\nCs = Concentration of the Standard\nCu = Concentration of the Unknown?\n\nAlternatively, did you get a value for the molar absorptivity of PNP at the wavelength you used? \nIf so, you could plug it into\n\nA = (epsilon)(b)(c)\n\nWhere\nepsilon is the molar absorptivity,\nb is the length of the path through which the light passed,\nc is the concentration of the chromogenic substance.\n\nAnd you could rearrange that to solve for c.\n\nHope it helps
97931
This depends on what you wanted in the colorimeter in the first place, are you looking at temperature change rates going up, or down?  Either way, if you mix the two, it will skew the results of your experiment.  Hot water, even at 100 C still may have a lot of ability to absorb latent heat of vaporization before it becomes steam.  Your temperature curve will slow significantly or even flatline for a while if you are increasing temperature.  If you are decreasing temperature, hot water has already lost most of the latent heat of vaporization, it has already become liquid, this will impact your results.
398999
Hi Scarlett,\n\nFirst of all, visible light waves consist of a continuous range of wavelengths or frequencies. When a light wave with a single frequency strikes an object, a number of things could happen. The light wave could be absorbed by the object, in which case its energy is converted to heat; the light wave could be reflected by the object; and the light wave could be transmitted by the object. Rarely however does just a single frequency of light strike an object. While it does happen, it is more usual that light of many frequencies or even all frequencies are incident towards the surface of objects. When this occurs, objects have a tendency to selectively absorb, reflect or transmit light of certain frequencies. That is, one object might reflect green light while absorbing all other frequencies of visible light. Another object might selectively transmit blue light while absorbing all other frequencies of visible light. The manner in which visible light interacts with an object is dependent upon the frequency of the light and the nature of the atoms of the object.\n\n"White" or natural light is made up of different colours (as in a rainbow) and Isaac Newton showed that these could be shown by shining white light through a prism.\n\nWhat "colour" we see an object depends on what wavelength of light it does not absorb and that depends on what the chemistry of the object is. This is because the electrons in a substance will vibrate at a certain frequency depending on what the construction (i.e. what the chemistry) of the atom is. Accordingly this will either absorb (interfere) or coincide with the wavelength of a particular colour.\n\nThus we will always see different chemicals as different colours (ie. wavelengths).
85610
This site might help "see" what is going on and why.  Interesting question by the way.  I saw my first one last summer and the colors were so bright.  It was amazing!  Had everyone out in the parking lot of the strip mall checking it out.\n\n\nhttp://hyperphysics.phy-astr.gsu.edu/Hbase/atmos/rbowpri.html\n\nhttp://en.wikipedia.org/wiki/Rainbow
14674
ah, i actually remember thinking that once... i always had a lot of questions like that, always so curious about stuff... that's why im a physics major, it explains so much... actually, while we may not be tasting or smelling the same thing, we are all seeing the same colors.  this is because each color has corrosponding wavelengths and frequencies of light on the electromagnetic spectrum.  Only a very small portion of this spectrum is even visible light, and we all agree on that.  the colors you see from objects are just the wavelenghts of light that are not absorbed by that object, so therefore are reflected. so we are definately all seeing the same frequencies of light... its easier to understand with sound, if you pick different frequencies, it's a higher or lower pitch.  we can all definately agree on the pitches of sound because we can agree on whether or not the pith is higher than another pitch. if you pick a frequency on the electromagnetic spectrum in the visible light range, that frequency will correspond to a certain color. violet is the color with the wavelength of the highest frequency, meaning it has the highest energy(E=hf where h is planck's constant so energy is directly proportional to frequency.) red has the lowest frequency, and therefore energy. the colors go in order of lowest to highest energy as follows: red, orange, yellow, green, blue, violet. it is is definate that what everyone views as violet is what has the highest energy, and what everyone views as red has the lowest.  and the colors as we know them, kind of blend into each other as you go up in energy, like starting with red you can have red orange and keep adding orange till you get to orange, then add some yellow and so on.. the colors blend nicely. if someone viewed lets say green instead of orange... well then red and green wouldnt mix so well now would they? if you think about it, the colors go "up" in energy steadily just as sound goes up in pitch steadily, so we do all view colors the same.  i hope i conveyed my thoughts properly and that made sense :)
372509
Need more info in order to help you...what class level?...what field of chem?...writing project or lab demo?...what is an 'investigatory project'?\nPlease resubmit your question anew with as much info as possible so that we can offer reasonable suggestions...if you simply edit this one we cannot reply twice to same question.
162913
Yes I work for the institute of color technologies. We need to figure out everyones favortie color in the entire universe.(including aliens) can you help?
50937
Here's a couple sites that will answer that question for you.\nhttp://www.colormatters.com/body.html\nhttp://www.biopulse.org/color.html
169795
I can't answer your question with absolute certainty, I apologise, but may have something to point you in the right direction...\nThere used to be a show on HGTV called Modern Masters- there was a metal artist on there once, the cut 1/2 inch wide copper strips, wove them into a 'fabric', carefully folded it and placed it into a kiln (1500? 1600? degrees f), he let it soak in the heat for a while (can't remember how long), then took it out and placed it into a water bath.  I think part of the colouring process might have come from the rapid cooling?  The piece had the colours you were looking for, as I recall.  \nI like the sound of what you're doing...hope it all works out for you...
661089
yo buddy.i know it matters a lot as i hav passed the class last yr itself!i got full marks in the project.\nas was for me,i made the whole project on kinda yellow orange sheets to give it an old kinda look...u see as soon ppl wil open it,they wil go into the era of old and yellow!\nwell..if u hav mae it colourful thts too good..but my onl idea is,simply everybody wil make the project on white sheets and all...take some diff. idea and work on it...like,,u can hav the whole project on black sheets wid lovely colourful pieces of paper hich u can write on...all DE BEST!
591044
click on the below link, and choose any one of the results. I would advise reading at least 3 of them to get a feel for theory before choosing one of the walkthroughs.\n\nBest of luck to you!
109685
white all light, colors are the rays absorbed when all othes don't, black is the absence of color, NO THERE IS NO COLOR.\nI took a painting class where the professor took awy the use of black because of that color theory, we had to make dark shades, given that we were painting something someone could see.
533960
The visible light region is from 0.7 µm to 0.4µm of the spectrum. The color of an object that we see is the color or wavelength of light reflected from the visible spectrum. All other colors or wavelength are absorbed. the following chemicals are different in terms of wavelength because of their different nature's regarding reflection of particular wavelength or the absorption of other.