| Shadows from a point source appear parallel when projected onto a flat surface. |
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| The results are consistent with the predictions of continuum elasticity theory for the strain of a point source subject to an applied force. |
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| Young placed a screen with two pin holes in it in front of a point source of light. |
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| Generally speaking, point source pollution is easier to regulate or control because you know the source of the pollution. |
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| Illuminance is the measurement of how bright a point source of light appears to the eye. |
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| The simulation showed that under still and convective conditions the vapours emitted by a point source rapidly form stationary envelopes around the leaves. |
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| They could then propose ways to improve processes and reduce emissions of point source toxic substances. |
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| He said regional council staff had concluded that the discharges would be a very high point source for several potentially toxic metals and dioxins. |
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| It is widely recognized that the goals of the Water Pollution Control Act Amendments of 1972 will be achieved only if in addition to point source pollution, nonpoint source pollution is controlled. |
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| After the implementation of point source pollution abatement measures, it has been shown that many of the natural water resources do not recover fully their natural water quality. |
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| The rising problem of industrial and urban waste water discharge to rivers in the US during the mid-1900s sparked the need to regulate point source pollution discharge. |
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| In other words, for a light meter to read 1 foot-candle from a uniform point source of light that is 1 ft. away, a light source of about 12.57 lumens is required. |
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| It uses a point source of monochromatic light at the focus of a quality lens. |
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| He also studied catacaustic curves in 1682, these being the envelope of light rays emitted from a point source after reflection from a given curve. |
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| It sounds as if you're telling us to give up because we're talking about cumulative impacts and you can't find a point source of pollution. |
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| The technical specifications shall establish methods for identifying those individual bodies of water which are susceptible to the point source and diffuse source pollution identified under sections 2 and 3 above. |
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| Initial input to receiving waters may arise from a point source discharge or a line source or area source, such as surface runoff. |
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| As stated earlier, the transmitter in this work is modeled as a spherical structure with a point source insider it and nanopores perforated on its surface through which molecules transude. |
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| The two RSA methods and PolyWare are shadow-casting methods, that is, the radiological shadows of one or both components are cast back toward the point source of the beam to determine the relative positions of each object. |
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| These TMDLs include load allocations for non-point and background sources and one waste load allocation for the major point source discharger in the basin, the Truckee Meadows Wastewater Reclamation Facility. |
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| In addition, a written management agreement between the point source discharger who will be participating and the body responsible for administering the trading program is an important element. |
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| Her EpiGlare Tester mounts on the phoropter instrument and emits a point source of light. |
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| Doe Run's smelter in Herculaneum may be the nation's largest point source for air lead emissions, but it's not the only one. |
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| The previous example is one of a point source trading with another point source. |
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| The owner of each NPDES permitted point source would have to pay an annual fee. |
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| An EM wave generated by a point source is a spherical wave, in that its wavefront expands on the surface of a sphere, with the radius of the sphere expanding at the speed of propagation. |
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| And a point source will anyway cast a sharper shadow. |
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| The oscillating dipole behaves as a point source of emitted radiation. |
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| In Pennsylvania a point source may trade with either other point sources or nonpoint sources. |
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| In addition, at distances greater than 1 meter, assuming point source geometry is conservative compared to other viable geometrics such as a volumetric source. |
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| To measure the wave fronts re-emitted by an eye, the astronomers create initially in situ a genuine artificial star by making of a point source an image on the retina in the near infra-red. |
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| Pollution is often classed as point source or nonpoint source pollution. |
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| When radioactive contamination is being measured or mapped in situ, any location that appears to be a point source of radiation is likely to be heavily contaminated. |
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| Point source pollution occurs when there is a single, identifiable, localized source of the pollution. |
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