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  2. Beam diameter - Wikipedia

    en.wikipedia.org/wiki/Beam_diameter

    The 1/e 2 width is equal to the distance between the two points on the marginal distribution that are 1/e 2 = 0.135 times the maximum value. In many cases, it makes more sense to take the distance between points where the intensity falls to 1/e 2 = 0.135 times the maximum value.

  3. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    siemens (S = Ω −1) L −2 M −1 T 3 I 2: scalar Electrical conductivity: σ: Measure of a material's ability to conduct an electric current S/m L −3 M −1 T 3 I 2: scalar Electric potential: φ: Energy required to move a unit charge through an electric field from a reference point volt (V = J/C) L 2 M T −3 I −1: extensive, scalar ...

  4. Bushing (electrical) - Wikipedia

    en.wikipedia.org/wiki/Bushing_(electrical)

    In electric power, a bushing is a hollow electrical insulator that allows an electrical conductor to pass safely through a conducting barrier such as the case of a transformer or circuit breaker without making electrical contact with it. Bushings are typically made from porcelain, though other insulating materials are also used.

  5. List of IEC standards - Wikipedia

    en.wikipedia.org/wiki/List_of_IEC_standards

    IEC 60136 Dimensions of brushes and brush-holders for electrical machinery; IEC 60137 Insulated bushings for alternating voltages above 1000 V; IEC 60139 Preparation of outline drawings for cathode-ray tubes, their components, connections and gauges; IEC 60141 Tests on oil-filled and gas-pressure cables and their accessories

  6. Pothead - Wikipedia

    en.wikipedia.org/wiki/Pothead

    A pothead is a type of insulated electrical terminal used for transitioning between overhead line and underground high-voltage cable or for connecting overhead wiring to equipment like transformers. [1] Its name comes from the process of potting or encapsulation of the conductors inside the terminal's insulating bushing.

  7. Self-proclaimed bitcoin inventor in contempt of court over $1 ...

    www.aol.com/news/self-proclaimed-bitcoin...

    LONDON (Reuters) -An Australian computer scientist who falsely claimed he invented bitcoin was sentenced for contempt of court on Thursday for bringing a 911 billion-pound ($1.2 trillion) lawsuit ...

  8. Oklahoma State coach Mike Gundy apologizes after saying 'most ...

    www.aol.com/sports/oklahoma-state-coach-mike...

    Oklahoma State is 3-6 and 0-6 in the Big 12 a season after making it to the Big 12 championship game. After starting the season with three straight non-conference wins, the Cowboys are in a tailspin.

  9. Quantum wire - Wikipedia

    en.wikipedia.org/wiki/Quantum_wire

    In practice, semiconductors can show clear conductance quantization for large wire transverse dimensions (~100 nm) because the electronic modes due to confinement are spatially extended. As a result, their Fermi wavelengths are large and thus they have low energy separations.