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# Vickers hardness test – using a pyramidal diamond indenter ; and
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# and Vickers
BEA Vickers Viscount variants # Viscount 700 | Viscount 701 G-ALWE RMA Discovery in bare metal finish livery incorporating a burgundy cheatline, a white roof and fin at Manchester in 1953.
The aircraft in the foreground, Vickers Vanguard # Variants | Vanguard V. 951 G-APEC, crashed on 2 October 1971 en route from Heathrow to Salzburg, Austria, with the loss of all on board.
British Airways Cargo Vickers Vanguard # Cargo operations | Vickers V. 953C Merchantman G-APEK still in basic BEA " Speedjack " aircraft livery | colours following the BEA-BOAC merger.
In the foreground a Vickers Viscount variants # Viscount 800 | Vickers Viscount 802, right background a Vickers Vanguard, left background a Hawker Siddeley Trident # Introduction | Hawker Siddeley Trident 1C ( note the red port and starboard | port wing of the aircraft in the foreground ).
Denny Hamlin in the # 11, is leading Brian Vickers on the inside, racing alongside Ken Schrader in the # 40.
# and hardness
# Nuclear hardness is determined for specified or actual quantified environmental conditions and physical parameters, such as peak radiation levels, overpressure, velocities, energy absorbed, and electrical stress.
# and test
# Test that F ≠ N, that F divides N ( time complexity O ( log N )), and that F is prime ( polynomial time ; see AKS primality test ).
Ivy Mike, the first full test of the Teller – Ulam design ( a Nuclear weapon design # Two-stage thermonuclear weapons | staged fusion bomb ), with a TNT equivalent | yield of 10. 4 megatons ( November 1, 1952 )
# using a stable optical source, at the wavelength of interest, to drive a mode scrambler, the output of which overfills ( drives ) a 1 to 2 meter long reference fiber having physical and optical characteristics matching those of the fiber under test,
# subtracting the power level obtained at the output of the fiber under test from the power level obtained at the output of the reference fiber, to get the transmission loss of the fiber under test.
# The DNA is placed in test tubes containing caesium chloride ( heavy compound ) and centrifuged at 40, 000 revolutions per minute.
0.547 seconds.