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2. Mach number - Wikipedia

   en.wikipedia.org/wiki/Mach_number

   The Mach number (M or Ma), often only Mach, (/ m ɑː k /; German:) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound. [1] [2] It is named after the Austrian physicist and philosopher Ernst Mach. =, where: M is the local Mach number,

3. Dirac delta function - Wikipedia

   en.wikipedia.org/wiki/Dirac_delta_function

   For example, to calculate the dynamics of a billiard ball being struck, one can approximate the force of the impact by a Dirac delta. In doing so, one not only simplifies the equations, but one also is able to calculate the motion of the ball, by only considering the total impulse of the collision, without a detailed model of all of the elastic ...

4. Boeing AH-64 Apache - Wikipedia

   en.wikipedia.org/wiki/Boeing_AH-64_Apache

   The AH-64's standard of performance for aerial gunnery is to achieve at least 1 hit for every 30 shots fired at a wheeled vehicle at a range of 800–1,200 m (870–1,310 yd). [58] British Apache pilot with IHADSS. The AH-64 was designed to perform in front-line environments, and to operate at night or day and during adverse weather conditions ...

5. IEEE 754 - Wikipedia

   en.wikipedia.org/wiki/IEEE_754

   The existing 64- and 128-bit formats follow this rule, but the 16- and 32-bit formats have more exponent bits (5 and 8 respectively) than this formula would provide (3 and 7 respectively). As with IEEE 754-1985, the biased-exponent field is filled with all 1 bits to indicate either infinity (trailing significand field = 0) or a NaN (trailing ...

6. List of Gilmore Girls characters - Wikipedia

   en.wikipedia.org/wiki/List_of_Gilmore_Girls...

   Marion Ross (American actress known for her role as Marion Cunningham on Happy Days) as Lorelai "Trix" Gilmore and her niece Marilyn, ep 1.18 3.10 3.15 4.14 4.16 5.13 Brandon James Routh (credited as B J Routh) (American actor, former fashion model and lead in Superman Returns , Atom/Ray Palmer in the CW Arrowverse series), ep 1.13

7. Transmission electron microscopy - Wikipedia

   en.wikipedia.org/wiki/Transmission_electron...

   A TEM image of a cluster of poliovirus.The polio virus is 30 nm in diameter. [1] Operating principle of a transmission electron microscope. Transmission electron microscopy (TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image.

8. 2020 United States presidential election - Wikipedia

   en.wikipedia.org/wiki/2020_United_States...

   In the early hours of November 4, the Associated Press called Florida for Donald Trump at 12:35 a.m. EST, putting him at 164 electoral votes. By 1:06 a.m. EST, they called Texas for Trump, putting him at 202 electoral votes, compared to Joe Biden's 224. Arizona and Maine were called for Biden at 2:51 a.m. and 3:06 a.m. EST

9. Jack Ma - Wikipedia

   en.wikipedia.org/wiki/Jack_Ma

   Jack Ma Yun (Chinese: 马云; pinyin: Mǎ Yún; born 10 September 1964) is a Chinese business magnate, investor, and philanthropist.He is the co-founder of Alibaba Group, a multinational technology conglomerate.