[Germany] windmill light (blue) Lucky Lucky Mouse 8cm ocean blue crystal ball light windmill glass artwork gifts Zodiac Rat fortune money mouse customization

Brand: MSA GLASS ENGRAVING Material: crystal glass Size: Glass ball diameter 8cm / width of about 10cm height of about mice 17 ~ 23cm (rat tail neither the same height) Origin: Germany System Lettering: the Crystal Mouse lettering (hand carved designer can not specify the font / numbers in English and Japanese can be) https://img-shoplineapp-com.s3.amazonaws.com/media/image_clips/57b097aa6170695a1cfabf00/source.jpg?1471190953 note: (1) Light windmill fritted vacuum in the manufacturing may be the production process little fine metal powder (from black metal sheet metal powder), each are probably slightly adhered to the glass is normal non-defective, can accept this label describe the state of the reorder avoid misunderstandings and disputes. (2) light windmill structure is very delicate, avoid violent shaking collision or when storing or viewing, please pay special attention ~ Note: The light windmill trademark certificate number / registration number: 0120.7502 https://youtu.be/1j12CrQeXYc What is light windmill? Light Windmill in Germany formerly Radiometer, is to demonstrate how light energy into kinetic energy rich educational physical means of. It consists of a glass ball and a pin mounted on the metal blade combine 4 group is made when the light shines on a metal blade, four metal sheets will begin to spin, the faster the stronger the rotating light, light weaker rotates more slowly, or even stationary https://youtu.be/0FbJRPG64So Light windmill principle of operation? When sunlight or the light bulb (not cold neon light) in the light metal windmill, these metal pieces will rotate at different speeds when strong light it will turn too fast, when the light is weak it will slow down. Glass balls are near vacuum state, to maintain balance inside the air resistance and the rotation of power, black metal sheet surface than the white surface absorb more light, so the pressure is also a black face than the white surface is large, when the inner sphere when the heat is gradually increased, the surface pressure of black metal sheet is also increasing, then rotate up. (Molecular theory of Brown) HOW THE SOLAR RADIOMETER WORKS When warm light, that is sunlight or the light of electric bulbs (but not cold neon light) strikes the wings resting on the needle in the radiometer bowl they start to turn. Depending on the power of the light, the wings turn at varying speeds . Inside the glass bowl there is a partial vacuum produced by the air being thinned in order to keep the balance between air resistance and the turning power of the solar energy. The black surfaces of the wings absorb more light than the white surfaces, therefore the pressure on the black surfaces is much stronger than on the white surfaces. The more the molecules in the bowl heat up, the stronger the pressure on the black surfaces and the wings start to turn steadily. (Molecular theory of Brown.) https://youtu.be/llxqNcipTwA Origin / manufacturing methods MSA GLASS ENGRAVING