ARM architecture family - Wikipedia
ウェブ21 時間前 · ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of RISC instruction set architectures (ISAs) for computer processors. Arm Ltd. develops the ISAs and licenses them to other companies, who build the physical devices that use the instruction set.
Graphene - Wikipedia
ウェブ21 時間前 · Graphene ( / ˈɡræfiːn / [1]) is an allotrope of carbon consisting of a single layer of atoms arranged in a hexagonal lattice [2] [3] nanostructure. [4] The name is derived from "graphite" and the suffix -ene, reflecting the fact that the graphite allotrope of carbon contains numerous double bonds. Each atom in a graphene sheet is connected ...
Geometry - Wikipedia
ウェブ21 時間前 · Geometry (from Ancient Greek γεωμετρία (geōmetría) 'land measurement'; from γῆ (gê) 'earth, land', and μέτρον (métron) 'a measure')[1] is a branch of mathematics concerned with properties of space such as the distance, shape, size, and relative position of figures.[2] Geometry is, along with arithmetic, one of the oldest ...
List of unsolved problems in physics - Wikipedia
ウェブ21 時間前 · Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result. The others are experimental, meaning that there is a difficulty in creating an experiment to test a proposed theory or investigate a phenomenon in …
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