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If, in an unsharp image, a patch of light corresponds to an object point, the center of gravity of the patch may be regarded as the image point, this being the point where the plane receiving the image, e. g., a focusing screen, intersects the ray passing through the middle of the stop.
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If and image
If **ya is the multiple secant of **zg which passes through Af and **yb is the simple secant of **zg which passes through Af, and if Af are the points in which **ya meets **zg, and if Af is the image of Af on the generator **yb, it follows that the image of the line Af is Af.
If, on the other hand, they opted for representation, it had to be representation per se -- representation as image pure and simple, without connotations ( at least, without more than schematic ones ) of the three-dimensional space in which the objects represented originally existed.
There are some passages in the writings of Irenaeus where the image of God and the similitude are sharply distinguished, so most notably in the statement: `` If the ( Holy ) Spirit is absent from the soul, such a man is indeed of an animal nature ; ;
If an alpha channel is used in an image, it is common to also multiply the color by the alpha value, to save on additional multiplications during compositing.
If an otherwise perfect wavefront is " aberrated " by piston and tilt, it will still form a perfect, aberration-free image, only shifted to a different position.
If the angle u1 is very small, O ' 1 is the Gaussian image ; and O ' 1 O ' 2 is termed the longitudinal aberration, and O ' 1R the lateral aberration of the pencils with aperture u2.
If the above errors be eliminated, the two astigmatic surfaces united, and a sharp image obtained with a wide aperture — there remains the necessity to correct the curvature of the image surface, especially when the image is to be received upon a plane surface, e. g. in photography.
If a pixel-by-pixel ( image order ) approach to rendering is impractical or too slow for some task, then a primitive-by-primitive ( object order ) approach to rendering may prove useful.
If a naive rendering algorithm is used without any filtering, high frequencies in the image function will cause ugly aliasing to be present in the final image.
In It's Not Funny If I Have to Explain It, Adams recounts having been attacked for the alleged political content of his work, although in the case of one such strip ( where oil drilling kills a unicorn ) he excuses himself by saying " I just thought the image was funny.
If all layers of an image change regularly but a large number of layer still need to be composited ( such as in distributed rendering ), the commutativity of a compositing operator can still be exploited to speed up computation through parallelism even when there is no gain from pre-computation.
If the imaging surface is cleaned of contaminants and residual moisture before the second image is taken, then no image of the missing section would appear.
If this image were transferred directly to paper, it would create a mirror-type image and the paper would become too wet.
If is another measurable space then a function is called measurable if for every Y-measurable set, the inverse image is X-measurable i. e..
If one looks in a mirror, one's image reverses ( e. g., if one raises one's right hand, his left hand will appear to go up in the mirror ).
If U. S. officials can " help clean up his image " and lift the ban on arms sales to the Panamanian Defense Force, Noriega will "' take care of ' the Sandinista leadership for us.
If and patch
If a vulnerability is disclosed before the security patch released by the vendor, a zero-day attack is possible.
If more suction is now applied, the small patch of membrane in the electrode tip can be displaced, leaving the electrode sealed to the rest of the cell.
If it is sitting lower in the water, so that the white on the flanks is reduced to a patch on the rear flank ( thus resembling the pattern of the Black-throated Loon ), that patch tends to be less clearly defined than the comparative patch on the Black-throated.
If the weed patch is vigorous enough, the farmer may mow the patch first before tilling.
If you blow up an icosahedron by moving the faces away from the origin the right amount, without changing the orientation or size of the faces, and do the same to its dual dodecahedron, and patch the square holes in the result, you get a rhombicosidodecahedron.
If accepted, the authors or maintainers will include the patch in their software, either immediately or in a future release.
If rejected, the person who submitted the patch will have to maintain his or her own distribution of the author's software.
If the left front wheel of a 4WD vehicle slips on an icy patch of road, for instance, the slipping wheel spin faster than the other wheels due to the lower traction at that wheel.
If the charge areas were positive, a widely extending patch is seen on the plate, consisting of a dense nucleus, from which branches radiate in all directions.
If the file is not identical to the version the diff was generated against, the patch will not be able to be applied cleanly.
If persistent intracranial hypotension is the result of a lumbar puncture, a " blood patch " may be applied to seal the site of CSF leakage.
If M admits local holomorphic coordinates for J around every point then these patch together to form a holomorphic atlas for M giving it a complex structure, which moreover induces J. J is then said to be ' integrable '.
If the clonidine patch is used to treat nicotine withdrawal symptoms, dosages that deliver 0. 1 – 0. 2 mg daily are used.
If a side-slip velocity u is introduced, the contact patch will be deformed.
If the party being called was in another exchange, the operator would use a patch cord to connect to another exchange where an operator elsewhere would finish the connection.
If the patch ruptures, the recording is then in whole-cell mode, with antibiotic contaminating the inside of the cell.
If its direction is orthogonal to that surface patch, the magnitude is the area of an infinitesimal patch of surface.
If these faces are aligned with a congruent patch of faces on the icosidodecahedron, then the hexagonal face will lie in the plane midway between two opposing triangular faces of the icosidodecahedron.
If we assume a 10 m diameter ideal ground-based telescope and an unresolved star: every second, over a patch the size of the seeing-enlarged image of the star, 35 photons arrive from the star and 3500 from air-glow.
If and light
If she did, he could stand it better in the light.
If the input light distribution falls beyond the visible range, Af as expected, since Af.
If it pleases symphony audiences as a light, jolly piece, a series of impressions musically expressed, it succeeds.
If light moves instantaneously, the telescope does not move, and the true direction of the star relative to the observer can be found by following the line ES.
If appropriate proportions of three primary pigments are mixed, the result reflects so little light as to be called " black ".
If the source emits light uniformly in all directions, the flux can be found by multiplying the intensity by 4π: a uniform 1 candela source emits 12. 6 lumens.
If it is removed, the light ceases.
If the glass is cooled quickly in the absence of a strong light source by putting ice on the glass or placing it in the freezer with the door almost closed, it turns backwards ( i. e. the silver sides trail ).
If light pressure were the cause of the rotation, then the better the vacuum in the bulb, the less air resistance to movement, and the faster the vanes should spin.
If the incident light is monochromatic, these sources all have the same phase.
If light consisted strictly of ordinary or classical particles, and these particles were fired in a straight line through a slit and allowed to strike a screen on the other side, we would expect to see a pattern corresponding to the size and shape of the slit.
If the width of the slits is small enough ( less than the wavelength of the laser light ), the slits diffract the light into cylindrical waves.
If the width of the slits is greater than the wavelength, the Fraunhofer diffraction equation gives the intensity of the diffracted light as:
If a ray tracing is then made as if a light wave ( as understood in classical physics ) is wide enough to take both paths, then that ray tracing will accurately predict the appearance of maxima and minima on the detector screen when many particles pass through the apparatus and gradually " paint " the expected interference pattern.
If the emulsion is dilute enough, higher-frequency and low-wavelength light will be scattered more, and the emulsion will appear bluer-this is called the " Tyndall effect ".
If applied to optical wavelengths, this manifests itself as a change in the colour of visible light as the wavelength of the light is increased toward the red part of the light spectrum.
If the incident light is unpolarised ( containing an equal mix of s-and p-polarisations ), the reflection coefficient is
If a laser is swept across a distant object, the spot of laser light can easily be made to move across the object at a speed greater than c. Similarly, a shadow projected onto a distant object can be made to move across the object faster than c. In neither case does the light travel from the source to the object faster than c, nor does any information travel faster than light.
If Lorentz symmetry can cease to be a fundamental symmetry at Planck scale or at some other fundamental scale, it is conceivable that particles with a critical speed different from the speed of light be the ultimate constituents of matter.
0.724 seconds.