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[2] Intel introduced a 64 kbit DRAM memory chip using a 1.5 μm CMOS process in 1983. [3] Ricoh RF5C164 is a 1.5 μm silicon-gate CMOS sound chip used in the Sega CD video game console, released in 1991. [4] The Amiga Advanced Graphics Architecture (initially sold in 1992) included chips such as Lisa that were manufactured using a 1.5 μm CMOS ...
A medium with a permeability of 1 darcy permits a flow of 1 cm 3 /s of a fluid with viscosity 1 cP (1 mPa·s) under a pressure gradient of 1 atm/cm acting across an area of 1 cm 2. Typical values of permeability range as high as 100,000 darcys for gravel, to less than 0.01 microdarcy for granite.
The micrometre (Commonwealth English as used by the International Bureau of Weights and Measures; [1] SI symbol: μm) or micrometer (American English), also commonly known by the non-SI term micron, [2] is a unit of length in the International System of Units (SI) equalling 1 × 10 −6 metre (SI standard prefix "micro-" = 10 −6); that is, one millionth of a metre (or one thousandth of a ...
The mass-to-charge ratio (m/Q) is a physical quantity relating the mass (quantity of matter) and the electric charge of a given particle, expressed in units of kilograms per coulomb (kg/C). It is most widely used in the electrodynamics of charged particles , e.g. in electron optics and ion optics .
Consider using popular rules of thumb to guide your financial path in 2025. Here are three involving budgeting, investing and retirement withdrawals.
How many people are affected? The fires have forced 180,000 people from their homes since Tuesday. More than 150,000 are under evacuation notices, a number that has grown close to 200,000 people ...
The "dilution factor" is an expression which describes the ratio of the aliquot volume to the final volume. Dilution factor is a notation often used in commercial assays. For example, in solution with a 1/5 dilution factor (which may be abbreviated as x5 dilution ), entails combining 1 unit volume of solute (the material to be diluted) with ...
Iceland. The traditional 12 days of Christmas begin on Christmas Day and end on the Epiphany, but in Iceland there are 13 extra days of Christmas, and they lead up to Christmas Eve.