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From these, it is easy to calculate the area (in cm 2) of the aortic valve by simply dividing the LV stroke volume (in cm 3) by the AV VTI (in cm) measured on the spectral Doppler display using continuous-wave Doppler. [citation needed] Stroke volume = 0.785(π/4) x Diameter 2 x VTI of LVOT Cross sectional area of LVOT = 0.785(π/4) x LVOT ...
Projected area is the two dimensional area measurement of a three-dimensional object by projecting its shape on to an arbitrary plane. This is often used in mechanical engineering and architectural engineering related fields, especially for hardness testing, axial stress , wind pressures, and terminal velocity .
3.5 cm – width of film commonly used in motion pictures and still photography; 3.78 cm – amount of distance the Moon moves away from Earth each year [113] 4.3 cm – minimum diameter of a golf ball [114] 5 cm – usual diameter of a chicken egg; 5 cm – height of a hummingbird, the smallest-known bird; 5.08 cm – 2 inches,
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where is the elementary charge, is the electron mass, is the speed of light, and is the permittivity of free space. [1] This numerical value is several times larger than the radius of the proton . In cgs units , the permittivity factor and 1 4 π {\displaystyle {\frac {1}{4\pi }}} do not enter, but the classical electron radius has the same value.
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The Sunset Fire broke out the evening of Jan. 8 in the Runyon Canyon area of the Hollywood Hills, forcing a new set of evacuations. It had burned dozens of acres of vegetation, officials said.