focal distance


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Related to focal distance: Effective focal length
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Synonyms for focal distance

the distance from a lens to its focus

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Caption: Seven stills from Zhang Peili's Focal Distance.
The exact calculated focal distance will be the distance at which the flat front surface of the samples will be located for the scanning, therefore this will be the peak value used as [A.
The occurrence date, location and magnitude of the two mainshocks in the areas 'a' and 'b' discussed in the text along with the parameters (SES initiation date, SES amplitude E and focal distance r) of their preceding SES recorded at ASS SES date E ([micro]V/m) r (km) EQ date 13 July 2012 (a) 15 250 8 January 2013 25 April 1985 (b) 14 195 30 April 1985 SES date EQ location [M.
In our case, for a focal distance equals to 350 mm, the focus width is equal to [d.
In the case when the focal distance changes and the aperture is stable in the axis of the ultrasonic beam, the pressure module reaches the maximum in the focal area and the increased pressure zone remains in the whole focal zone length, decreasing almost in a straight direction in terms of increase in focal distance.
The system's focal distance (the distance the x-ray beam travels from the x-ray tank exit to the surface of the imaging detector) can be automatically adjusted for each can size, offering optimum detection and a higher level of operational flexibility.
The focal distance of the concave lens was designed according to Eq.
This focal distance tolerance also compensates for problems resulting from product vibrations and movements whilst on the conveyor and ensures consistently high quality, high-contrast marking, even where condensation is present on the bottles.
Fish size was measured both by using a pair of parallel laser beams, and an auto-focus video camera linked to software for estimating object size based on the focal distance of the object in focus.
A simple comparison of the number of cells visible in the field from the same specimen at the same focal distance consistently verified a 3% to 5% increase in that count compared before and after processing.
A motor-driven Z-axis allows automatic adjustment of the focal distance to accommodate different workpieces, and a motor-driven vertical-lift front door simplifies exchanging workpieces.
75X magnification power and a focal distance of 13.
Geometric Magnification = FDD/FOD where: FOD = focus object distance, the focal distance from the bottom of the tube to the test object
The relations for the attenuation of velocity and acceleration amplitudes are expressed in terms of magnitude, focal distance and generally in seismic transmission functions of the station subsoil.
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