enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Transitions Optical - Wikipedia

   en.wikipedia.org/wiki/Transitions_Optical

   Transitions Optical is a U.S.-based company known for manufacturing photochromic lenses, which darken on exposure to specific types of light. The company was founded in 1990. The company was founded in 1990.

3. Graphite intercalation compound - Wikipedia

   en.wikipedia.org/wiki/Graphite_intercalation...

   Potassium graphite under argon in a Schlenk flask. A glass-coated magnetic stir bar is also present. One of the best studied graphite intercalation compounds, KC 8, is prepared by melting potassium over graphite powder. The potassium is absorbed into the graphite and the material changes color from black to bronze. [3]

4. Molecular electronic transition - Wikipedia

   en.wikipedia.org/wiki/Molecular_electronic...

   In theoretical chemistry, molecular electronic transitions take place when electrons in a molecule are excited from one energy level to a higher energy level. The energy change associated with this transition provides information on the structure of the molecule and determines many of its properties, such as colour .

5. Thermogravimetric analysis - Wikipedia

   en.wikipedia.org/wiki/Thermogravimetric_analysis

   Thermogravimetric analysis or thermal gravimetric analysis (TGA) is a method of thermal analysis in which the mass of a sample is measured over time as the temperature changes. . This measurement provides information about physical phenomena, such as phase transitions, absorption, adsorption and desorption; as well as chemical phenomena including chemisorptions, thermal decomposition, and ...

6. High-temperature gas-cooled reactor - Wikipedia

   en.wikipedia.org/wiki/High-temperature_gas...

   The graphite has large thermal inertia and the helium coolant is single phase, inert, and has no reactivity effects. The core is composed of graphite, has a high heat capacity and structural stability even at high temperatures. The fuel is coated uranium-oxycarbide which permits high burn-up (approaching 200 GWd/t) and retains fission products.

7. Graphene - Wikipedia

   en.wikipedia.org/wiki/Graphene

   In 2002, Robert B. Rutherford and Richard L. Dudman filed for a patent in the US on a method to produce graphene by repeatedly peeling off layers from a graphite flake adhered to a substrate, achieving a graphite thickness of 0.00001 inches (0.00025 millimetres). The key to success was the ability to quickly and efficiently identify graphene ...