When Ajax finally left Troy, Athena hit his ship with a thunderbolt, but Ajax still survived, managing to cling onto a rock.

When water percolates through limestone or other soluble carbonate rocks, it partially dissolves the rock and causes cave formation and characteristic stalactites and stalagmites and also forms hard water.

When covalent bonds link long chains of atoms in large molecules, however ( as in polymers such as nylon ), or when covalent bonds extend in networks though solids that are not composed of discrete molecules ( such as diamond or quartz or the silicate minerals in many types of rock ) then the structures that result may be both strong and tough, at least in the direction oriented correctly with networks of covalent bonds.

When the Beagle made its first stop ashore at St Jago, Darwin found rock formations which seen " through Lyell's eyes " gave him a revolutionary insight into the geological history of the island, an insight he applied throughout his travels.

When Yellowstone Caldera last erupted some 650, 000 years ago, it released about 1, 000 km < sup > 3 </ sup > of material ( as measured in dense rock equivalent ( DRE )), covering a substantial part of North America in up to two metres of debris.

* When the metal atoms are cubic close packed, ( ccp ), then filling all of the octahedral interstices with carbon achieves 1: 1 stoichiometry with the rock salt structure.

When choosing a set of shells, a jazz drummer may want smaller maple shells, while a rock drummer may want larger birch shells.

When asked during a 2007 phone-in interview on XETRA-FM if he ever had any notions of performing in an Oingo Boingo reunion, Elfman immediately rejected the idea and stated that in the last few years with the band he had begun to develop significant and irreversible hearing damage as a result of his continuous exposure to the high noise levels involved in performing in a rock band.

When the temperature decreases again, the rock contracts, causing pieces of the rock to break off.

When the term first surfaced circa the late 1980s / early 1990s, it was used for adult sports such as skydiving, scuba diving, surfing, rock climbing, snow skiing, water skiing, snowboarding, mountain biking, mountaineering, storm chasing, hang gliding, and bungee jumping, many of which were then growing in popularity.

When all that is left is an organism-shaped hole in the rock, it is called an external mold.

When a rock crystallizes from melt ( magma and / or lava ), it is an igneous rock.

When rock units are placed under horizontal compression, they shorten and become thicker.

When a granitoid is devoid or nearly devoid of plagioclase, the rock is referred to as alkali granite.

When Superman followed the time trail of a piece of red rock that weakened him, he was able to trace his origin back to Krypton for the first time.

When conditions are right for precipitation, calcite forms mineral coatings that cement the existing rock grains together, or it can fill fractures.

The Australian alternative rock band, The Go-Betweens dedicated a track off their 1994 album The Friends of Rachel Worth, When She Sang About Angels in reference to Smith's long time influence on themselves.

When this proved too small he took over Winterland and then the Fillmore West ( in San Francisco ) and the Fillmore East ( in New York City ), where the major rock artists, from both the US and the UK, came to play.

When a tree stump or other obstruction such as a rock is encountered, the ploughshare is thrown upwards, clear of the obstacle, to avoid breaking the plough's harness or linkage ; ploughing can be continued when the weight is returned to the earth after the obstacle is passed.

The name ' Rocabarraigh ' is also used in Scottish Gaelic folklore for a mythical rock which is supposed to appear three times, the last being at the end of the world: " Nuair a thig Rocabarra ris, is dual gun tèid an Saoghal a sgrios " ( When Rocabarra returns, the world will likely come to be destroyed ).

When, for example, an explosion blows a hole in a rock wall, the GeoMod technology creates an " empty space " object which is the approximate size and shape of the explosion.

When rock producer Robert " Mutt " Lange heard Twain's original songs and singing from her debut album, he offered to produce and write songs with her.

" When it finally saw official release in 1998, critic Richie Unterberger declared the record " an important document of rock history.

When the star is a distant object, parallax is negligible and the difference is due mostly to aberration.

When the telescope is at position E it must be oriented toward spot S ′ so that the star light enters the telescope at spot S ′.

When playing teams, teammates usually sit at opposite corners of the star, with each team member controlling his / her own set of pieces.

When the Dallas Cowboys franchise debuted in 1960, the team's uniform included a white helmet adorned with a simple blue star and a blue-white-blue stripe down the center crown.

When Bowie left the technical school the following year, he informed his parents of his intention to become a pop star.

When it was pointed out to Niven that the Ringworld was dynamically unstable, in that once the center of rotation drifted away from the central sun, gravity would pull the ring into contact with the star, he used this as a plot element in the sequel novel, The Ringworld Engineers.

When a meteoroid enters the atmosphere, frictional, pressure, and chemical interactions with the atmospheric gasses cause the body to heat up and emit light, thus forming a fireball, also known as a meteor or shooting / falling star.

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 this phase comes to an end, the star enters the PPN phase.

When nuclear fusion in the core of the star stops, the star collapses.

When the AFL and NFL merged, the team fell into a state of mediocrity along with their star quarterback, Namath, who only had three successful post-merger seasons after injuries hampered much of his career.

When neutron star core material is presumed to consist mostly of free neutrons, it is typically referred to as neutron-degenerate matter in scientific literature.

When he turned the telescope toward some of the nebulous patches recorded by Ptolemy, he found they were not a single star, but groupings of many stars.

When the medal With Distinction is awarded, the star may be presented depending from a neck ribbon and can be identified by its larger size than the standard medal ( compare size of medals in pictures below ; President Reagan's was awarded With Distinction ).

When he returned, the pilot had been refashioned as That Was The Week That Was and had made a star of David Frost, something Cook resented.

When spoken near a candle flame, the flame will flicker more after the words par, tar, and car are articulated, compared with spar, star, and scar.

When he returned, the astrologer recognised it as the shuttle of the Weaving Girl ( Vega ), and, moreover, said that at the time Zhang received the shuttle, he had seen a wandering star interpose itself between the Weaving Girl and the cow herd.

When the physical star topology is applied to a logical bus network such as Ethernet, this central node ( traditionally a hub ) rebroadcasts all transmissions received from any peripheral node to all peripheral nodes on the network, sometimes including the originating node.

When the Allies announced the invasion of North Africa, Major General Patton suddenly found himself under the command of his former subordinate, now one star his superior.

When the adductor tires, the sea star can insert its stomach through the opening and release gastric juices, digesting the prey alive.

When the surrounding gas and dust envelope disperses and accretion process stops, the star is considered a pre – main sequence star ( PMS star ).

When Star Trek was cancelled in 1969, Shatner assumed it would be the end of his association with the show ; however, Shatner went on to voice Kirk in the animated Star Trek, star in the first seven Star Trek movies, and provide voice acting for several games.