This structure formed is porous and therefore firm and at the same time light.

The minor radiative heat transfer is minimized by having many surfaces interrupting a " clear view " between the inner and outer surfaces of the insulation much as visible light is interrupted from passing through porous materials.

The original vascular structure of the wood and the pores created by escaping gases combine to produce a light and porous material.

High-intensity shortwave ultraviolet light can be used for disinfecting smooth surfaces such as dental tools, but not porous materials that are opaque to the light such as wood or foam.

The stone is light grey with traces of green and is slightly porous.

Anodic films can also be used for a number of cosmetic effects, either with thick porous coatings that can absorb dyes or with thin transparent coatings that add interference effects to reflected light.

The structure of both simple and compound scleractinians is light and porous, rather than solid as in the Rugosa.

It grows in semi-arid and arid environments and seems to favor light, dry, porous soils.

The ciabatta from the area encompassing Lake Como has a crisp crust, a somewhat soft, porous texture, and is light to the touch.

It is light and porous.

We put a light mulch over the seedlings ; ;

They can survive light freezes and short periods of snow cover, but, in areas with prolonged snow cover, a covering of a dry winter mulch is recommended.

During growth these cover crops compete vigorously with weeds for available space, light, and nutrients, and after death they smother the next flush of weeds by forming a mulch layer on the soil surface.

However, mulch can absorb much of the rainfall provided during light rainfall, which will later quickly evaporate when exposed to sunlight, thus preventing absorption into the soil, while heavy rainfall is able to saturate the mulch layer, and reach the soil below.

High-gain, photoelectronic image intensification is applied under conditions of low incident light levels whenever the integration time required by a sensor or recording instrument exceeds the limits of practicability.

The term antidepressant is sometimes applied to any therapy ( e. g., psychotherapy, electro-convulsive therapy, acupuncture ) or process ( e. g., sleep disruption, increased light levels, regular exercise ) found to improve a clinically depressed mood.

The source of Einstein's proposal that light was composed of particles ( or could act as particles in some circumstances ) was an experimental anomaly not explained by the wave theory was the photoelectric effect, by which light striking a metal surface ejected electrons from the surface, causing an electric current to flow across an applied voltage.

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.

Development chemicals applied to an appropriate film can produce either a positive ( showing the same densities and colors as the subject ) or negative image ( with dark highlights, light shadows, and, in principle, complementary colors ).

If the applied pump power is too small, the gain will never be sufficient to overcome the resonator losses, and laser light will not be produced.

If the applied voltage is large enough, the liquid crystal molecules in the center of the layer are almost completely untwisted and the polarization of the incident light is not rotated as it passes through the liquid crystal layer.

By controlling the voltage applied across the liquid crystal layer in each pixel, light can be allowed to pass through in varying amounts thus constituting different levels of gray.

When no voltage is applied to a TN liquid crystal cell, polarized light passes through the 90-degrees twisted LC layer.

When voltage is applied, the liquid crystals shift to a tilted position allowing light to pass through and create a gray-scale display depending on the amount of tilt generated by the electric field.

Following the work of Paul Dirac in quantum field theory, George Sudarshan, Roy J. Glauber, and Leonard Mandel applied quantum theory to the electromagnetic field in the 1950s and 1960s to gain a more detailed understanding of photodetection and the statistics of light.

Geometrical optics can be viewed as an approximation of physical optics which can be applied when the wavelength of the light used is much smaller than the size of the optical elements or system being modelled.

The wavelength of visible light waves varies between 400 and 700 nm, but the term " light " is also often applied to infrared ( 0. 7 – 300 μm ) and ultraviolet radiation ( 10 – 400 nm ).

For example, an increase in frequency results in an increase in the maximum kinetic energy calculated for an electron upon liberation – ultraviolet radiation would require a higher applied stopping potential to stop current in a phototube than blue light.

If the light yoke and sweet burden of Christ were to be preached to the most obstinate people of the Saxons with as much determination as the payment of tithes has been exacted, or as the force of the legal decree has been applied for fault of the most trifling sort imaginable, perhaps they would not be averse to their baptismal vows.

The word saw its first scientific use within the field of optics to describe the rainbow of colors in visible light when separated using a prism ; it has since been applied by analogy to many fields other than optics.

Ultrasound when applied in specific configurations can produce short bursts of light in an exotic phenomenon known as sonoluminescence.

And it worked: When Lawrence applied 2, 000 volts of electricity to his makeshift cyclotron on January 2, 1931, he got 80, 000-electron volt protons spinning around ( at about 1 % the speed of light ).

The magnetic field,, applied to the Faraday rotator causes a rotation in the polarization of the light due to the Faraday effect.

* Liquid crystals ( e. g., ) that rotate polarized light either 0 degrees or 90 degrees depending on the applied electric field ;

The enormous changes in world politics have, however, thrown it into confusion, so much so that it is safe to say that all international law is now in need of reexamination and clarification in light of the social conditions of the present era.

The drizzle was slacking off now, but the light was grayer.

Geometric pottery has not yet received the thorough, detailed study which it deserves, partly because the task is a mammoth one and partly because some of its local manifestations, as at Argos, are only now coming to light.

But, up to now, no one has attempted to analyze its inherent mathematical properties, or the numerical significance of its numbers -- singly or in combination -- and then tried to consider these in the light of Old Chinese cosmological concepts.

The birds were really awake now in a colloquy of music, and light was beginning to creep across the room, touching sill and door, table and chair and all of Doaty's flowers in their artificial blossom and leaf.

`` And also, sir, two articles which were considered souvenirs now must be regarded in another light entirely.

now he felt light and gay and clear-headed, ready for the many actions he saw spreading out before him.

Bose first sent a paper to Einstein on the quantum statistics of light quanta ( now called photons ).

Most of the other light aircraft acquired by the FABF in the 1970s and 1980s have also now been retired along with the Mi-4 helicopters, but some recent acquisitions have been made, including a Beechcraft King Air, a Piper PA-34 Seneca, a CEAPR Robin light training aircraft, and a single Air Tractor AT-802 aerial sprayer aircraft for spraying insecticides, purchased after the northern part of the country suffered heavy crop damage from a 2004 invasion of swarming locusts.

In the 1980s aluminum alloy frames and other components became popular due to their light weight, and most mid-range bikes are now principally aluminum alloy of some kind.

Bose first sent a paper to Einstein on the quantum statistics of light quanta ( now called photons ).

< p > Early morn on Broadway, the same light that tips the mountain tops of the Colorado canyons gradually discloses the quiet anatomy, the bare skeletons of the huge iron signs that trellis the sky, now denuded of the attractions of the volcanic night.

Even now, advanced radiosity calculations may be reserved for calculating the ambiance of the room, from the light reflecting off walls, floor and ceiling, without examining the contribution that complex objects make to the radiosity — or complex objects may be replaced in the radiosity calculation with simpler objects of similar size and texture.

Radiometers are now commonly sold worldwide as a novelty ornament ; needing no batteries, but only light to get the vanes to turn.

The Santiago light rail system is a planned light rail system in the Dominican Republic's second largest city, still in developing stages it was said to start on mid 2008 but right now is currently on hold due to lack of approval and of central government funds.

ET, in turn, can now be seen ( in light of modern results ) as close to the average mean solar time between 1750 and 1890 ( centered on 1820 ), because that was the period during which the observations on which Newcomb's tables were based were performed.

While this method, now known as the triboelectric effect, is capable of lifting light objects and even generating sparks, it is extremely inefficient.

Most modern day electronics now use printed circuit boards made of materials such as FR4, or the cheaper ( and less hard-wearing ) Synthetic Resin Bonded Paper ( SRBP, also known as Paxoline / Paxolin ( trade marks ) and FR2 )-characterised by its light yellow-to-brown colour.

Electron microscopes are expensive to build and maintain, but the capital and running costs of confocal light microscope systems now overlaps with those of basic electron microscopes.

A lot of preparation has taken place and now the Exiles are ready to send a selected few back into the light of the surface.

Some of these markets are now served by light helicopters.

Arc lights had been used to produce special lighting effects in films like the light from a lamp or firelight before 1906, but this now became more common.