When spotting aircraft, observers notice the key attributes of an aircraft.

When an object falls into a black hole, any information about the shape of the object or distribution of charge on it is evenly distributed along the horizon of the black hole, and is lost to outside observers.

When Eta Carinae was first catalogued in 1677 by Edmond Halley, it was of the 4th magnitude, but by 1730, observers noticed it had brightened considerably and was, at that point, one of the brightest stars in Carina.

( 3 ) When the flag is displayed vertically the blue band should be on the observers left.

When he was made a member of the Seventh Supreme People's Assembly in February 1982, international observers deemed him the heir apparent of North Korea.

When rational observers have different background beliefs, they may draw different conclusions from the same scientific evidence.

When he was pressured by the international community, notably a very vocal US ambassador to the Central African Republic, Daniel H. Simpson, to hold fair elections, assisted by the UN Electoral Assistance Unit and monitored by international observers in 1992, he only won 10 % of the vote and so he declared the elections invalid and had the Constitutional Council cancel the election.

When two observers are in relative uniform motion and uninfluenced by any gravitational mass, the point of view of each will be that the other's ( moving ) clock is ticking at a slower rate than the local clock.

When the Abu Ghraib military prisoner torture and abuse scandal was publicized in March of 2004, many observers were immediately struck by its many similarities to the Stanford Prison experiment.

When many of these same expert observers reared on the 1930s debacle became the architects of a new unified post war system at Bretton Woods, the watch words became " no more beggar thy neighbor.

When he was finally forced by the donor community, notably a very vocal US ambassador, to hold fair elections, assisted by the UN Electoral Assistance Unit and monitored by international observers in 1992, he only won 10 % of the vote and so he declared the elections invalid and had the Constitutional Council cancel the election.

When the bully encounters no negative response from observers, it encourages continuation of the behavior.

When the observers balked and produced injunctions from the Brooklyn Supreme Court McKane supposedly declared " injunctions don't go here " and ordered the men away.

When the bomber pilots, observers and fighter escort pilots were preoccupied with the destruction they were causing on the ground, Boelcke signaled for his pilots to attack.

When he revised his statement to say that the police provocateurs were peaceful observers, the same video showed them to be masked, wearing police boots, and in one case holding a rock.

When the number of objects presented exceeds the subitizing range, this feeling is lost, and observers commonly report an impression of shifting their viewpoint around the display, until all the elements presented have been counted.

When Pompuang died in 1992, many observers felt that luk thung would die with her.

When medical authorities questioned him on this, he and a fellow explorer agreed to undertake a study under the auspices of the Journal of the American Medical Association to demonstrate that they could eat a 100 % meat diet in a closely observed laboratory setting for the first several weeks, with paid observers for the rest of an entire year.

When the visiting Soyuz 36 Intercosmos crew departed Salyut 6 on 3 June 1980 and the remaining resident crew almost immediately redocked the Soyuz craft left behind, observers speculated the secretive Soviets were possibly planning a second Intercosmos mission.

When doing so, the Protest Warriors carried large signs often designed to appear similar to those held by the participants, enabling them to mingle until observers were close enough to read their signs ' fine-print.

* Vocabulary: When a sign was reported by three independent observers, it was added to a checklist.

When they encountered a living world that had features in favor of the evolution of intelligent life, they left behind the monoliths as remote observers that were also capable of taking a variety of actions according to the wishes of their creators.

When the bell rang to signal the end of the eighth round, most observers had the Welshman ahead, but he was tiring fast and, in the ninth, suffered the first knockdown of his professional career.

When a dog is happy or wants to play, it might pant with lips relaxed, covering the teeth and with what sometimes appears to be a happy expression ( it might appear as a smile to some observers ) or with the mouth open.

When typical reaction cells to which 0.3 of an atmosphere of oxygen had been added were illuminated, chlorine and phosgene were produced.

When an APAF-1 gene trap is introduced into cells, many morphological changes occur, such as spina bifida, the persistence of interdigital webs, and open brain.

When HeLA cells are infected with OROV, the cytochrome C is released from the membrane of the mitochondria, into the cytosol of the cells.

Neurons generate electrical signals that travel along their axon s. When a pulse of electricity reaches a junction called a synapse, it causes a neurotransmitter chemical to be released, which binds to receptors on other cells and thereby alters their electrical activity.

When these cells become entrapped from osteoblasts they become osteocytes.

When this gene was inserted into tomato and tobacco cells ( see RNA interference ), the cells were able to withstand environmental stresses like salt, drought, cold and heat, far more than ordinary cells.

When working with weeks rather than months, a continuous format is sometimes more convenient, where no blank cells are inserted to ensure that the first day of a new month begins on a fresh row.

When brain tissue from a CJD patient is examined under a microscope, many tiny holes can be seen where whole areas of nerve cells have died.

When monosaccharides are not immediately needed by many cells they are often converted to more space-efficient forms, often polysaccharides.

When cells enter mitosis, the sister chromatids ( which represent the two copies of each chromosomal DNA molecule resulting from DNA replication earlier in the cell cycle and packaged by histones and other proteins into chromatin ) are linked all along their length by the action of the cohesin complex.

When the body is expending more energy than it is consuming ( e. g. when exercising ), the body's cells rely on internally stored energy sources, such as complex carbohydrates and fats, for energy.

When the rains return and soils become wet, the osmotic gradient between the bacterial cells and the soil water causes the cells to gain water quickly.

: When an amoeba divides, the two daughter cells stay attached by a tubular tether which remains intact unless mechanically severed.

* When scanning the fluorescent intensity across a plane one has fluorescence microscopy of tissues, cells, or subcellular structures, which is accomplished by labeling an antibody with a fluorophore and allowing the antibody to find its target antigen within the sample.

When red cells reach the end of their life due to aging or defects, they are broken down in spleen, the hemoglobin molecule is broken up and the iron gets recycled.

When insulin is deficient or cells become resistant to it, diabetes occurs.

When bone marrow develops, it eventually assumes the task of forming most of the blood cells for the entire organism.

When, via random mutation across the population, the photosensitive cells happened to have developed on a small depression, it endowed the organism with a better sense of the light's source.

When Iceman was injected with Sinister's neuro-inhibiter by Mystique, he was able to save himself by drawing in all of the ambient moisture around him, rapidly replacing his poisoned cells with healthy material before the injection could kill him.

When the dendritic cells are chronically exposed to morphine during their differentiation process then treated with LPS, the production of cytokines is different.