the first industrially practical polyethylene synthesis diazomethane is a notoriously unstable substance that is generally avoided in industrial application was discovered in 1933 by eric fawcett and reginald gibson, again by accident, at the imperial chemical industries ici works in northwich, england. upon applying extremely high pressure several hundred atmospheres to a mixture of .
a supercapacitor sc , also called an ultracapacitor, is a high-capacity capacitor with a capacitance value much higher than other capacitors, but with lower voltage limits, that bridges the gap between electrolytic capacitors and rechargeable batteries.it typically stores 10 to 100 times more energy per unit volume or mass than electrolytic capacitors, can accept and deliver charge much .
the aerospace industry of the united kingdom is the fourth-largest national aerospace industry in the world and the third largest in europe, with a global market share of 6.4% in 2016. in 2013, the industry employed 84,000 people. domestic companies with a large presence in the british aerospace industry include bae systems the world's fourth-largest defence contractor , britten-norman .
nec also launched v850/sb1 for car audio with iebus controller in 1998, which is ultra-low power 3.6 mw 5 v/mips and ultra-low noise emi/ems 5 v product. and v850/sc1 was also for 'car audio'. these strategical product line expansion well succeeded to enlarge the number of sold devices.
bioactive glasses are a group of surface reactive glass-ceramic biomaterials and include the original bioactive glass, bioglass.the biocompatibility and bioactivity of these glasses has led them to be investigated extensively for use as implant device in the human body to repair and replace diseased or damaged bones.
plywood faced sandwiches are thermal insulators made with low density fiber boards with an ultralight foam interior. the plywood faced sandwich provide insultion properties superior to those without ultralight-weight properties. possible advances. parts of massive bridges could be made from ultra strong, lightweight material in the future .
potential graphene applications include lightweight, thin, and flexible electric/photonics circuits, solar cells, and various medical, chemical and industrial processes enhanced or enabled by the use of new graphene materials.. in 2008, graphene produced by exfoliation was one of the most expensive materials on earth, with a sample the area of a cross section of a human hair costing more than .
the first industrially practical polyethylene synthesis diazomethane is a notoriously unstable substance that is generally avoided in industrial application was again accidentally discovered in 1933 by eric fawcett and reginald gibson at the imperial chemical industries ici works in northwich, england. upon applying extremely high pressure several hundred atmospheres to a mixture of .
future vertical lift fvl is a plan to develop a family of military helicopters for the united states armed forces.five different sizes of aircraft are to be developed, sharing common hardware such as sensors, avionics, engines, and countermeasures. the u.s. army has been considering the program since 2004. fvl is meant to develop replacements for the army's uh-60 black hawk, ah-64 apache, ch .
many glass fiber composites continued to be called 'fiberglass' as a generic name and the name was also used for the low-density glass wool product containing gas instead of plastic. ray greene of owens corning is credited with producing the first composite boat in 1937, but did not proceed further at the time due to the brittle nature of the plastic used.
discovery 'ultraviolet' means 'beyond violet' from latin ultra, 'beyond' , violet being the color of the highest frequencies of visible light.ultraviolet has a higher frequency and thus a shorter wavelength than violet light. uv radiation was discovered in 1801 when the german physicist johann wilhelm ritter observed that invisible rays just beyond the violet end of the visible spectrum .
polycarbonate is commonly used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally indicate the use of glass, but require much higher impact-resistance. polycarbonate lenses also protect the eye from uv light.