How to Make a rainbow in a bottle science experiment?
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Try this site. I just looked at it and it looks pretty neat. Going to bookmark it for my grandchildren...\n\n  \n\nRainbow in the bottle? - All Science Fair Projects You can make a rainbow in a bottle. Although visual effects were used to enhance the rain bow, you can create it!! I will post that thread so you can learn ...\nclassroom.all-science-fair-projects.com/ forum/showthread.php?t=1072 - 81k - Cached - Similar pages \n\n21: Rainbow in a Bottle\nWith just the bottom of a clear 2-liter bottle as a containter, it is possible to show that water is capable of separating white light (from a flashlight, for example) into its full spectrum (red, orange, yellow, green, blue, indigo, violet or ROYGBIV, for short).\n\nAdding a mirror makes it possible to make a bright rainbow in reflection-almost** like the real thing-by placing a small mirror at an angle into the container and setting it in a sunny window so that sunlight strikes the mirror. A rainbow (**shape is different) appears above the mirror and can be projected on a piece of white paper or a white wall. (This can also be done with a flashlight, although the effect is much less dramatic.)\n\nMaterials: Bottom of clear 2-liter bottle (cut off about 20 cm. from the bottom), small mirror (edges taped or enclosed), water, white paper or poster board; bright flashlight; small containers (foam, paper, etc.) to hold water, plastic droppers, waxed paper.\n\nSafety: handle glass mirrors carefully: do not use any with cracks or sharp edges\n\nProcedure: \n1. (To show that water can separate white light into colors) Fill bottom of 2-liter bottle almost full of water. One person should shine the flashlight at edge and adjust angle while another person hold a piece of white paper to act as a screen to observe the "rainbow". Keep adjusting to see the widest strip with all the colors.\n\n2. Place a mirror in the container of water. Adjust mirror angle and container position in sunny window until sunlight is on the mirror and rainbow is projected upward. (Although it does not work as well, the effect can also be seen with a bright flashlight. If you need to use the flashlight method, do it in the darkest place available or it may be impossible to see the colors.) Observe colors-order and intensity-as well as shape of "rainbow". In what ways does this differ from a rainbow as seen in the sky? \nNote that this rainbow is in front of the reflector (mirror) and is being projected back towards the Sun. (In a sky rainbow you must stand with your back to the Sun to see the rainbow also.) Perhaps in a sky rainbow, something is reflecting the light back to you as well as splitting it into colors. What could that something be?\n\n2. Can water reflect light? To see that it can, put some water in a bowl and look at it. Can you see your reflection? Can just a tiny drop of water reflect? (Drop water on waxed paper and look for reflections of overhead lights, etc.)\n\nWisconsin Standards:\nPhysical Science: D.4.8 Observe light\nhttp://www.ripon.edu/faculty/nortonm/dailyscience.html
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click here:http://en.wikipedia.org/wiki/Rainbow
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I had to do the same thing.\n\nHere's what I did. it was real easy.\n\nGo to a craft store, get a plastic see through empty ball that you can take apart in halves. Then buy clear candle GEL. Get a wire for orbitals and beads for electrons.\n\nWhat you do is melt the candle gel in a pan until it is liquid, let it cool a little and pour it into half the ball, put your "orbitals" with the electrons in place on the gel, put the second half of the ball on, tape it shut and some tape and string to hang it up.\n\nIt takes about 5 minutes to make and is visible from all angles.
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Homemade Glue\n1/2 cup flour\nwater \n\nAdd cold water to 1/2 cup flour until a thick cream forms. Simmer on stove 5 minutes. Add food coloring or flavoring if desired. Takes a while to dry.
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1. Red, orange, yellow, green, blue, indigo, and violet. Actually, the rainbow is a whole continuum of colors from red to violet and even beyond the colors that the eye can see.\n2. you can see a rainbow anywhere there is water around and you have the sun to your back.\n3.Sir Isaac Newton in his early physics experiments decided the colors of the rainbow
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Here is a nice experiment to try.\nhttp://www.angelfire.com/mo/sasschool/DKScieMatter10.html\n\n"This tasty crystal making experiment is a great way to see the formation of crystals almost right in front of your eyes."\n\nAnother one.\nhttp://homeschooling.gomilpitas.com/explore/crystals.htm\n\n"Crystal Ornament"\n\nAnother.\nhttp://www.yesmag.bc.ca/projects/crystal_gardens.html\n\n"Crystal Gardens"\n\nOne for microscopic crystals.\nhttp://www.science.uwaterloo.ca/earth/waton/crystal.html\n\n"Crystal growing made easy"
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One of my favorites was making a tornado in a 2 L soda bottle.\n\nWhat you do is take a bottle and pour it almost full of water. Get some grass and some small toys, like cars to put in there. I like to use the monopoly houses to. Then put a small drop of soap in then swirl the top a the bottle around really fast. There ya go a tornado. Then give a one or two paragraph summery on how a tornado is formed.
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Here's a site with alot of different ideas and difficulty levels with instructions.  Maybe you can find something here.\n\nOr you can tell us more about what you are wanting to do and what you like and we might be more helpful on here.\n\nhttp://www.all-science-fair-projects.com/
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just mix 'em up  , if you give me the name of 'all ' the colours , i will tell you how to make them\n\nI guess you mean primary colours (= base colours)\nthese are yellow red and blue\n\nyellow and red will make orange\nyellow and blue will make green\nred and blue will make purple\nyellow , red and blue will make brown\nmix them up in different proportions to get all the other colours
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When light is refracted off of droplets of water it enables you to see all the colors that make up white light (sunlight, even light from bulbs.) creating what people more commonly refer to as a rainbow. \n  Go outside on a sunny day and spray the waterhose if you have one. If you look very carefully, you can see that the rainbow you created is not just a semi-circle, but a full circle! The bottom half is harder to see, but it is there. The reason rainbows don't look like that when we see them outside is because we are too low to the ground to see the rest.
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I found a web site with a lab on how to figure out releative density of a given liquid hope it helps.  It has all the instructions and materials needed listed on the site
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http://eo.ucar.edu/rainbows/\n\nThe traditional description of the rainbow is that it is made up of seven colors - red, orange, yellow, green, blue, indigo, and violet. Actually, the rainbow is a whole continuum of colors from red to violet and even beyond the colors that the eye can see.\n\nSunlight is made up of the whole range of colors that the eye can detect. The range of sunlight colors, when combined, looks white to the eye. This property of sunlight was first demonstrated by Sir Isaac Newton in 1666. \nLight of different colors is refracted by different amounts when it passes from one medium (air, for example) into another (water or glass, for example
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Try this link:\n\nhttp://www.scitoys.com/scitoys/scitoys/light/cd_spectroscope/spectroscope.html\n\nThe link below shows how to make a spectroscope, too, only at first glance it seemed a whole lot more complicated.\n\nhttp://www.uwm.edu/~awschwab/specweb.htm\n\nHope it helps! Good luck! :D
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you need an explosive charge and one or more of the following compounds to product the color:\nRed=Strontium Chloride, or Lithium chloride\nYellow=Basicly anything with sodium\nWhite=Magnesium or zinc\nGreen=Copper compounds or phosphates and nitrates\nBlue=Lead orarsenic or Cupric chloride or antimony\nPurple=potassium or silicates
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milk glue\n\n(idea) by FredPenner (47.6 min) (print)  ?  1 C!Thu Feb 02 2006 at 3:33:08\n\nDid you know that milk (along with a few other common ingredients) can be used to make glue? What fun!\n\nHere's a few recipes that you can try with your kids next time Science Fair season rolls around at school:\n\nSimple Milk Glue\nIngredients:\n1 Enameled pot (non-metallic)\n500ml skim milk\n90ml vinegar\n60ml water\n15ml baking soda\n\nMethod:\n1) Heat milk and vinegar slowly, stirring constantly until milk begins to curdle (separate).\n2) Remove from heat and continue stirring until curdling stops.\n3) Let the mixture sit until all the curds (thick white bits) have settled to the bottom.\n4) Strain the curds or pour off the liquid (whey).\n5) Place the curds on newspaper or paper towel and allow to dry to a glue-ish consistency.\n6) Mix curds, water and baking soda. The vingegar will react with the baking soda. Stir until bubbling stops.\n7) Store glue in an air-tight container.\n\nThis glue will keep for a couple of days, but once it starts to smell like old milk you should probably throw it away. This applies to all these glues.\n\n\nSimpler Glue\n1) Add one cup of milk and 1/3 cup of vinegar to a mason jar.\n2) Let stand until the milk separates.\n3) Pour off the liquid (whey) and discard.\n4) Add 1/4 cup of water and 1 tbsp of baking soda.\n6) Mix and let stand until bubbling stops.\n\nI haven't tried this glue but it seems much simpler than the recipe above and requires no cooking, which makes it easier and safer for the kids.\n\n\nA bit more toxic Glue\nIngredients:\n1tbsp low fat milk powder\n80mL water\nvinegar\nammonia\n\nMethod\n1) Mix water and milk powder until dissolved.\n2) Add drops of vinegar to mixture and stir until milk curdles.\n3) Strain curd and allow to dry.\n4) Add drops of ammonia to curd, stirring until creamy.\n\nHaven't tried this one either; I'm allergic to ammonia. But it follows the same principles as the other recipes, except it uses ammonia as the base to neutralize the acidity of the vinegar. I'd stick with vinegar for the kids though.\n\nWhy it works\nIt's all about the Casein\nAll of the above recipes use milk as a source of casein, the active ingredient in this type of glue. Casein is a sticky protein composed of complex chains of amino acids that can be used to make glue as described above or even biodegradable plastics. But that's another node.
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one option is to freeze the water, shape it into a concave lens shape, polish it till its transparent, and use the disk like a magnifying glass on the match head.\n\ni saw this actually done on myth busters, although it didn't go very well
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The first problem is that a true Klein bottle cannot be made in three dimensions. The ones you can buy are 'Klein bottles with a hole'. \n\nTo make a Klein bottle, let's first make a torus (a bagel shape). Start with a circular cylinder, and label the two circles on top and on bottom with little arrows pointing the same direction around the cylinder. Then glue those circles together so that the arrows go together. This is a torus.\n\nNow do the same thing, only have the circles go in opposite directions around the cylinder. You will find that to glue the circles together, you would have to push through the side of the cylinder and glue from underneath. If you imagine cutting a little hole so this can be done, you have a Klein bottle with a hole! Now imagine filling in the hole, but *not* causing any intersections. Again, this can't be done in three dimensions, but it can in four. THe result is a true Klein bottle.\n\nThere is a misunderstanding that non-orientable surfaces are always one-sided. This depends strongly on what space they are imbedded in! When in Euclidean space, this is correct, but if they are imbedded in another non-orientable space, they can be two-sided there. Non-orientability has to do with whether there is a way to get a consistent 'circulation pattern' over the whole surface.