| # |
URL |
| Answer |
|
| 1 |
http://www.adobe.com/support/techguides/color/colortheory/matter.html |
(a) The object that you are looking at absorbs certain colors from light according to its pigments, this determines the color that the eye sees.
(b) When an object is translucent the light passes directly through the object without being changed, this is called transmission
(c) The reflection of the light of the object helps the eye determine the type of surface that the object has, if it reflects it is usually smooth and glossy.
(d) Refraction is when the light is seperated into colors for example sunlight going through raindrops makes a rainbow. |
|
| 2 |
http://www.howstuffworks.com/question404.htm |
| Glass is a solid, but it is not a very ordered solid. Glass's atomic structure is similar to a liquid- the almost random organization of the atoms or molecules(like in a liquid) lets light pass through. |
|
| 3 |
http://www.resource-world.net/Pb.htm (quite a way down on this page) |
| Lead-oxide is the chemical form of lead used in leaded glass crystals. It provides 24% to 36% of this compound. |
|
| 4 |
http://www.agsa.org/history.html |
| He wrote his manual in about 1100 A.D. |
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| 5 |
http://www.paintstore.com/archives/misc/14.html |
| The three essential components that make up paint are pigments, binders and solvents. Pigments are the coloring agents, binders determine the physical properties and solvents allow the paint to flow and when they evaporate the paint hardens. |
|
| 6 |
http://enviro.nfesc.navy.mil/esc425/LdUses.htm |
| Lead was used in paints until the mid-1950's as a white pigment. The chemical compound was lead carbonate. |
|
| 7 |
http://www.emedicine.com/derm/topic512.htm#target1 |
| Cadmium sulfide is the chemical used. |
|
| 8 |
http://www.knaw.nl/ecpa/ink/index.html |
| Iron-gall ink, used by Johann Sebastian Bach, was made from the chemical Tannic acid providing the iron. The "gall" was provided by the gall nuts found in China, India, Japan and some Willow and Oak trees in America.
|
|
| 9 |
http://www.anl.gov/OPA/frontiers/c3facil.html |
| The level of lead found in Beethoven's hair was 60 parts per million (ppm), while the regular level is 0.6 ppm. Beethoven's hair had a level about 100 times more than the average person. |
|
| 10 |
http://www.paonline.com/joespuppets/1-fog.htm |
| Theatrical fog is produced when a mixture of glycol and water is heated up and vaporizes, and it billows out the nozzle of the smoke-machine. |
|
| 11 |
http://www.kremer-pigmente.de/englisch/10060e.htm
|
| The chemical composition of the pigment Egyptian Blue is CaCuSi(sub)4O10 |
|
| 12 |
http://wunmr.wustl.edu/EduDev/Water/acidrain.html |
| The chemical reaction that takes place between limestone statues and acid rain is that the sulfiric acid in the acid rain dissolves the CaCO3 leaving aqeous ions that then wash away. |
|
| 13 |
http://www.finishing.com/0800-0999/838.html |
| A recipe to put a patina on coper is dissolve copper nitrate 4 oz, Acetic acid 1 oz, and Water 2 oz. and then apply the solution to the copper while hot. |
|
| 14 |
http://www.artlex.com/ArtLex/s/silver.html |
| The composition of sterling silver is 92.5% silver (minimum) and 7.5% copper and sometimes low karat gold. It's melting point is 1,083 degrees celsius. |
|
| 15 |
http://www.hooverandstrong.com/asktorry/solderin.htm |
| The pickle, used in the soldering metal process is a sodium bisulfate based solution. This pickle is particularly good for gold. Other metals use different pickles. For example, "Copper and copper alloys can be pickled in sulfuric acid solutions with the addition of an oxidizing agent (for heavy scales) such as chromic acid, nitric acid, ferric sulfate or sodium dichromate. NOTE: Chromic acid and dichromate require treatment for hexavalent chromium. Chromic acid or dichromate solutions tend to passivate the substrate and require activation prior to plating. Activation is commonly carried out in 5-10% sulfuric acid solution or 10-20% hydrochloric acid solution. If the latter is used to interchangeably pickle steel parts and copper parts, the dissolved copper must be closely controlled to avoid a typical problem. The dissolved copper will eventually plate out on the steel parts and cause adhesion problems." |
|
| 16 |
http://www.howstuffworks.com/question293.htm |
| When the light is turned on, the neon gas ionizes and the electrons flow through the gas. These electrons get excited and move to higher energy levels. When the electrons move back down from the higher levels, energy is given off; this energy is in the form of light. |
|
| 17 |
http://whyfiles.org/081art_sci/5.html |
| X-Ray fluorescence was the "non-harmful" technique used to discover other "revisions", or layers, under Titian's painting. |
|
| 18 |
http://web.mit.edu/edgerton/felice/felice.html |
| Frankel uses light- and dark-fielmicroscopy and atomic force microscopy to create her artistic works. |
|
| 19 |
http://www.nashville.org/ma/floor.html |
| Water cooled xenon lamps. They have a high pressure water-cooler electrodes and are especially made for large theaters. |
|
| 20 |
http://aic.stanford.edu/treasure/metals.html |
| The metal object should be kept at a relative humidity below 55%. |
|
| 21 |
http://www.saud.ku.edu/book/eye/color.htm |
| The three types of cones provide us the basis of color vision. Cones are "tuned" to different portions of the visible spectrum. red absorbing cones are those that absorb best at the relatively long wavelengths peaking at 565 nm, green absorbing cones with a peak absorption at 535 nm and blue absorbing cones with a peak absorption at 440 nm. |
|
| 22 |
http://palimpsest.stanford.edu/byorg/abbey/an/an19/an19-6/an19-605.html |
| The deacidification process includes exposing the book to a high level of humidity while interleaving them wtih paper containing calcium carbonate. The book and papers are kept at this high humidity and under pressure for a few days or up to three months. |
|
| 23 |
http://www.laserfantasy.com/Products/index.html |
| Various mixed-gas laser options are offered including Argon, Krypton, Helium, Neon, Ion and combinations. With these options, you can choose to project a single color or the full array of colors. |
|
| 24 |
http://www.violins.on.ca/luthier/vargloss.html#copa |
| In the 19th century copal was a popular varnish. Copal is from the Mexican copalli. Mexican copal, generally considered the best, is obtained from a species of Hymenia. It forms one of the most valuable of varnishes when it has been dissolved in alcohol, spirits of turpentine, oil of turpentine which has been exposed to the air, or any other suitable medium. The addition of oil of spike or rosemary promotes its solubility in alcohol. |
|
| 25 |
http://www.uk-piano.org/history/compass.html |
| After a ban was placed on ivory piano keys in 1963, piano keys have been made of wood covered with a plastic shell. This plastic shell was invented by Pratt, Read & Co. |
