Insert tube into oval, then use aluminum tape or foil to seal up any part of the box where light can enter. The completed, light-sealed spectrometer. Use a pen to trace the circle in the middle of the CD. Set the CD on top of the box, about a half an inch from the left edge on the side you intend to place the tube. Step 1: Begin by making a hole for the viewing tube. The CD will help to ensure that the three elements line up correctly. Light will enter your spectroscope through a small slit (the diffraction grating), reflect off the CD, and be seen through the viewing tube. Aluminum tape or aluminum foil and glue: Aluminum tape can be found in most hardware stores, but standard foil from your kitchen and glue work effectively.A cardboard tube: A toilet paper tube or part of a paper towel or gift wrap tube works fine larger tubes would, of course, need to be cut to a more manageable size.Some websites suggest using two single-edged razor blades, which would be thicker and certainly be straight, but paper cards are more child-friendly. One or two business cards/3x5 cards: Business cards are thicker than standard index cards, so I felt they would let less light through.A DVD or CD: You won't be getting it back, so make sure it's one you don't mind losing.I used a medium priority shipping box, but small shipping boxes, shoe boxes or cereal boxes will work just as well. A cardboard box: The box needs to be large enough to contain a CD or DVD.(Image credit: Nola Taylor Redd) Materials needed The needed tools, all of which should be relatively easy to find around the house.
0 kommentar(er)
