When they were ready to leave, Benson and Ramey walked back around the rear of the trailer.

When the car, with Susan's hands waving wildly from the rear window, disappeared down the driveway, Lucy stood looking after its pale dust.

When the Roman infantry became entangled in combat with his army, the hidden ambush force attacked the legionnaires in the rear.

When the shuttlecock is near to net height, players can hit drives, which travel flat and rapidly over the net into the opponents ' rear midcourt and rearcourt.

When he had reached Bodmin on 28 July, he found that there was no chance of supplies or recruits, and he also learned that the Royalist army was at Launceston, close to his rear.

When attacking large prey, coyotes attack from the rear and the flanks of their prey.

When Hindal withdrew from protecting the rear of Humayun's troops, Sher Shah's troop quickly reclaimed these positions, leaving Humayun surrounded.

When law enforcement agencies are using machine pistols in non-concealed settings, this makes it feasible to add accessories such as optical sights, laser sights, flashlights, forward handgrips, rear stocks, or sound suppressors.

When an executioner was sent to strangle him at Yedikule, Constantinople, Osman II refused to give in and started fighting the man and was only subdued when he was hit on his back with the rear end of an axe by one of his imprisoners.

When ' running ', it is more efficient for the crew to sit to the rear of the boat.

When a key is in the normal position an electrical talk path connects the front and rear cords.

When a call is received, a jack lamp lights on the back panel and the operator responds by placing the rear cord into the corresponding jack and throwing the front key forward.

When the rifle is being carried on the shoulder, a similar gesture is used in which the flattened free hand is brought across the body to touch the rifle near the rear of the receiver.

When the transmission detects a speed difference of greater than 20 % between the front and rear axle sets, the transmission progressively sends power to the rear wheels.

When accelerating or driving uphill, the vehicle's weight shifts rearward, reducing front wheel traction, causing the transmission to automatically send torque to the rear wheels to compensate.

When braking or driving downhill, the vehicle's weight shifts towards the front, reducing rear wheel traction.

When cornered, the zebra will rear up and kick or bite its attacker.

When landing a jump, skaters uncross the free leg from in front of the landing leg and swing it to the rear.

When the gates were opened, thousands of fans entered a narrow tunnel leading to the rear of the terrace into two overcrowded central pens, creating pressure at the front.

When fired, the iron cap would force itself into the hollow cavity at the rear of the bullet, thereby expanding the sides of the bullet to grip and engage the rifling.

When the rear wheel meets that bump a moment later, it does the same in reverse, keeping the car level front to rear.

When both springs are compressed on one side when travelling around a bend, or front and rear wheels hit bumps simultaneously, the equal and opposite forces applied to the front and rear spring assemblies reduce the interconnection significantly, or even completely.

When a continuum radiation source is used for AAS, it is necessary to use a high-resolution monochromator, as will be discussed later.

When a continuum radiation source is used for AAS measurement it is indispensable to work with a high-resolution monochromator.

When exposed to sunlight, artificial light, or infrared radiation ( even the heat of a hand nearby can be enough ), the vanes turn with no apparent motive power, the dark sides retreating from the radiation source and the light sides advancing.

When these crystals are exposed to radiation, the dysprosium atoms become excited and luminescent.

When any wire ( or other conducting object such as an antenna ) conducts alternating current, electromagnetic radiation is propagated at the same frequency as the electric current.

When EM radiation interacts with matter, its behavior changes qualitatively as its frequency changes.

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 electromagnetic radiation is incident on matter, it causes the charged particles to oscillate and gain energy.

When matter ( ordinary material particles ) is changed into energy ( such as energy of motion, or into radiation ), the mass of the system does not change through the transformation process.

When the first scientific satellites were launched in the first half of 1958 — Explorers 1 and 3 by the US, Sputnik 3 by the Soviet Union — they observed an intense ( and unexpected ) radiation belt around Earth, held by its magnetic field.

When lifeforms take such giant leaps, they meet little to no competition and are able to exploit a plethora of available niches, following a pattern of adaptive radiation.

* When an < sup > 235 </ sup > U atom captures a neutron, it is converted to an excited state of < sup > 236 </ sup > U. About 81 % of the excited < sup > 236 </ sup > U nuclei undergo fission, but the remainder decay to the ground state of < sup > 236 </ sup > U by emitting gamma radiation.

When a star has lost enough material, its temperature increases and the ultraviolet radiation it emits can ionize the surrounding nebula that it has thrown off.

When ionizing radiation strikes a semiconductor, it may excite an electron out of its energy level and consequently leave a hole.

When the direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat.

When ultraviolet radiation is not absorbed by the atmosphere or other protective coating, it can cause damage to the skin known as sunburn or trigger an adaptive change in human skin pigmentation.

When a population inversion () is present, therefore, optical amplification of incident radiation will take place.

When wavelengths of electromagnetic radiation are quoted, the wavelength in vacuum usually is intended unless the wavelength is specifically identified as the wavelength in some other medium.

When enough energy is deposited in a droplet by ionizing radiation the superheated droplet undergoes a phase transition and becomes a gas bubble.

When ground down to sizes less than 10 micrometres, the grains are removed from the inner solar system by solar radiation pressure.

When heat radiates from the surface of the earth, it is released as long-wave radiation, which can move freely through gases composed of diatomic molecules ( such as the atmosphere's oxygen and nitrogen ), but is readily absorbed by triatomic molecules, such as carbon dioxide and water vapor.

When combined with measurements of the cosmic microwave background radiation these implied a value of, a result which has been supported and refined by more recent measurements.

When the density and temperature are high enough, deuterium fusion begins, and the outward pressure of the resultant radiation slows ( but does not stop ) the collapse.