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1. a flash of lightning accompanying thunder
2. (in mythology) the destructive weapon wielded by several gods, esp the Greek god Zeus
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
In mythology, a lightning flash accompanied by a material bolt or dart and which causes great damage; it is still used as a popular term for a single lightning discharge accompanied by thunder.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
ThunderboltA peripheral interface from Intel introduced in 2011. First used on a MacBook Pro laptop, Thunderbolt provides simultaneous transfer of DisplayPort graphics for the monitor and PCI Express data for storage and other devices. Thunderbolt 3 added USB 3.1 Gen 2 connectivity.
Up to six peripherals can be connected in a daisy chain, providing an expansive external interface over one port. However, computers generally have several Thunderbolt ports. See DisplayPort, PCI Express and USB.
In 2020, Thunderbolt 4 is expected to have the same speed as Thunderbolt 3 but also support USB 4. Following are the Thunderbolt generations, and each is backward compatible with the previous one. See Thunderbolt Display and Thunderbolt Bridge.
DataTB Rate ---Interfaces--- Port Gen (GBps) DP PCIe USB Type 1 (2011) 10 v1.1a v2 x4 mDP 2 (2013) 20 v1.2 v2 x4 mDP 3 (2015) 40 v1.2 v3 x4 3.1 USB-C 4 (2020) 40 v1.3 v3 x4 4 USB-C
|Mini DisplayPort (mDP)|
|Thunderbolt 1 and 2 use the Mini DisplayPort plug and socket; however, Thunderbolt 3 switched to USB-C (see USB Type C).|
|Thunderbolt on a Desktop Mac|
|Two of the six Thunderbolt ports are used on this 2nd-generation Mac Pro. The black cable delivers DisplayPort to the monitor, and the orange cable transfers data between an external drive over PCI Express. See Mac Pro.|
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