When sufficiently accurate and complete measurements are available, it will be possible to set limits on the thermal and electrical characteristics of the surface and subsurface materials of the moon.

When problems with poor control at high speed were first encountered, they were addressed by designing a new style of control surface with more power.

When dry, acrylic paint is generally non-removable from a solid surface.

When evaluating a coin, the following — often subjective — factors may be considered: 1 ) " eye appeal " or the aesthetic interest of the coin ; 2 ) dents on the rim ; 3 ) unsightly scratches or other blemishes on the surface of the coin ; 4 ) luster ; 5 ) toning ; 6 ) level of detail retained, where a coin with full details obviously is valued higher than one with worn details.

When metal ions are reduced from ionic solution, they form a pure metal surface on the cathode.

When particles in a beam are thrown against a foil made of a certain substance, the cross section is a hypothetical area measure around the target particles of the substance ( usually its atoms ) that represents a surface.

When the angle θ does not satisfy the above condition, the horizontal component of force exerted by the road does not provide the correct centripetal force, and an additional frictional force tangential to the road surface is called upon to provide the difference.

When the magma approaches the surface of the Earth, the rapid off-loading of overlying material causes the trapped gases to decompress rapidly, thus triggering explosive destruction of the magma and spreading volcanic ash over wide areas.

When EM radiation at the frequences for which it is referred to as " radio waves " impinges upon a conductor, it couples to the conductor, travels along it, and induces an electric current on the surface of the conductor by moving the electrons of the conducting material in correlated bunches of charge.

When the umbra does not reach the surface of the Earth, the Sun is only partially occulted, resulting in an annular eclipse.

When wet, the oil tends to float to the surface of the roads making them very slippery and dangerous.

When swimming, the thorax would be weighed down by the front legs, making it difficult for the animal to move its neck and legs in harmony or keep its head above the surface.

When the cannon was fired through the touchhole, turbulence from the initial surface combustion caused the rest of the powder to be rapidly exposed to the flame.

When the stone hits the surface of the water, a circular pattern of waves appears.

When jewelry containing diamonds is heated ( for repairs ) the diamond should be protected with boracic acid ; otherwise the diamond ( which is pure carbon ) could be burned on the surface or even burned completely up.

When jewelry containing sapphires or rubies is heated, it should not be coated with boracic acid or any other substance, as this can etch the surface ; they do not have to be " protected " like a diamond.

When using an injection port, the syringe needle always stays above the surface of the skin, thus reducing the number of skin punctures associated with intensive insulinotheraphy.

When the surface glycosaminoglycan ( GAG ) layer is damaged ( via a urinary tract infection ( UTI ), excessive consumption of coffee or sodas, traumatic injury, etc.

When issues were thoroughly vetted, then the best ideas would bubble to the surface.

When a key is pressed, the foil tightly clings to the surface of the PC board, forming a daisy chain of two capacitors between contact pads and itself separated with thin soldermask, and thus " shorting " the contact pads with an easily detectable drop of capacitive reactance between them.

When cut open, lithium exhibits a metallic luster, but contact with moist air corrodes the surface quickly to a dull silvery gray, then black tarnish.

When depictions of lesbians began to surface, they were often one-dimensional, simplified stereotypes.

When this angle is exceeded, photons no longer penetrate the semiconductor but are instead reflected both internally inside the semiconductor crystal and externally off the surface of the crystal as if it were a mirror.

When full, a notable phenomenon is that around midday the lake surface can often become very flat.

When our eyes met the air was filled with an unuttered message of `` Me, too ''.

When air travel was in its infancy, the sky was considered big enough and high enough for all.

When the child raises his seat into the air, the teacher takes hold under both sides of the pelvis ; ;

When stacking wine on its side in a bin, care should always be taken to be sure there is no air bubble left next to the cork.

When they had gone, he stood for a minute breathing in the mustiness of old paper and leather which the busily thrumming air conditioner couldn't quite dispel.

When he turned into the highway that led to the outskirts of the city and then rose toward home, he had to pull over to the curb and wait for a few minutes, sucking in air and squinting and blinking his eyes to clear them of tears.

When a parcel of air descends, the pressure on the parcel increases.

When the pressure applied on a parcel of air decreases, the air in the parcel is allowed to expand ; as the volume increases, the temperature falls and internal energy decreases.

116 .</ ref > When air condenses it becomes visible, as mist and then rain and other forms of precipitation, and as the condensed air cools Anaximenes supposed that it went on to form earth and ultimately stones.

When people started to study scientifically how to fly, people began to understand the basics of air and aerodynamics.

When the particles are in great motion, they produce a Doppler shift for measuring wind speed in the laser light, which is used to calculate the speed of the particles, and therefore the air around the anemometer.

When Colonel de Gaulle did organize a counter-attack with superior French tanks, he did not have the air support to gain the upper hand and had to retreat.

" When Congress, in the summer of 1973, legislated an end to U. S. military action in, over, or off the shores of Indochina, the only U. S. military activity then going on was air support of a friendly Cambodian government and army desperately defending their country against a North Vietnamese and Khmer Rouge onslaught ... What destabilized Cambodia was North Vietnam's occupation of chunks of Cambodian territory from 1965 onwards for use as military bases from which to launch attacks on U. S. and South Vietnamese forces in South Vietnam.

When the stale air, warmed from the lungs, is exhaled, it condenses as it meets colder external air.

When the work was done, the artist, waving his wings, found himself buoyed upward and hung suspended, poising himself on the beaten air.

When he arrived home, Sullivan learned he would not be able to air the Bergman material from it.

When Ford approached the U. S. Federal Aviation Administration ( FAA ) about regulatory issues, the critical problem was that the ( then ) known forms of air traffic control were inadequate for the volume of traffic Ford proposed.

Allied fighters, by gaining air superiority over the European battlefield, played a crucial role in the eventual defeat of the Axis, which Reichmarshal Hermann Göring, commander of the German Luftwaffe summed up when he said: " When I saw Mustangs over Berlin, I knew the jig was up.

When forming a sibilant, one still is forcing air through a narrow channel, but in addition the tongue is curled lengthwise to direct the air over the edge of the teeth.

When the reactive substance comes in contact with the resin, it will bond to it, removing it from the air stream.