Les Mots
Get flash to fully experience Pearltrees
Catéchisme de l'Eglise Catholique: Compendium [ Allemand , Anglais , Biélorusse , Espagnol , Français , Hongrois , Indonésien , Italien , Lituanien , Portugais , Roumain , Russe , Slovène , Suédois ]
Cat chisme de l'Eglise Catholique
Pollution photos: Free (public-domain) pictures/images of air an
Looking for photos of water and air pollution to illustrate your school or college project? You've come to the right place. We've collected together a mini "photo library" of about 60 public domain (copyright free) images you can safely use without worrying about copyright.
Didymium Safety Glasses - Sundance Art Glass Center
We offer the highest quality filtered glass lenses designed for glass working. You no longer have to pay those high prices for frames from that other company. Most filtering lenses come from the same factory in Germany, so the only difference between where you buy your glasses is the style of the frame and how much you pay.
Laser
Note: Due to the amount of material, information on specific commercial helium-neon lasers has moved to their own chapters: Commercial Unstabilized HeNe Lasers for the vanilla flavored (or actually mostly cherry flavored!) variety, and Commercial Stabilized HeNe Lasers for frequency and/or intensity stabilized scientific and metrology types.
My opinion on DealExtreme is the best because it is a transparent company that serves its customers from a distance, as in my case I'm from Brazil. I never had any preoblema with DX for always imforma by email when orders are dispatched and with numbers of rastreamentols. I am very satisfied with the service of dealextreme, I had an order returned by the Brazilian customs and they would reverse it without much ado. optimal interface between customer and company where you feel really valued. recommend to all.
DealExtreme: $1.54 6mm 5mA Red Laser Module (3.5~4.5V)
Statistique INED
Population et Sociétés est un bulletin d'information scientifique de quatre pages, publié en français et en anglais.
USB
Universal Serial Bus Revision 3.0 Specification (.zip file format, size 6.42 MB) provides the technical details to understand USB 3.0 requirements and design USB 3.0 compatible products. Modifications to the USB 3.0 specification are made through Engineering Change Notices (ECNs).Disclaimer: Glassblowing has inherent hazards that can result in burns, cuts, injuries or even death.
Verre soufflé
Teralab - Amateur Physics Experiments.
This site is an attempt to document some of the physics experiments and science projects which I have conducted in my laboratory at home. These experiments include high vacuum, glass blowing, X-rays, optics and electrostatics.A molecular sieve is a material containing tiny pores of a precise and uniform size that is used as an adsorbent for gases and liquids. Molecules small enough to pass through the pores are absorbed while larger molecules are not. It is different from a common filter in that it operates on a molecular level.