While crystals, according to the classical crystallographic restriction theorem, can possess only two, three, four, and six-fold rotational symmetries, the Bragg diffraction pattern of quasicrystals shows sharp peaks with other symmetry orders, for instance five-fold.

While in theory all stars or other " point sources " of a given wavelength and seen through a given aperture have the same Airy disk radius characterized by the above equation ( and the same size diffraction pattern ), differing only in intensity ( the " height " of the surface plot at upper right ), the appearance is that fainter sources appear as smaller disks, and brighter sources appear as larger disks.

While most elements are generally viewed as stable, a small amount of natural transformation of one element to another also occurs in the present time, through decay of radioactive elements as well as other natural nuclear processes.

While the first reference to " guising " in North America occurs in 1911, another reference to ritual begging on Halloween appears, place unknown, in 1915, with a third reference in Chicago in 1920.

While it is true that three power strokes typically occur per rotor revolution due to the 3: 1 revolution ratio of the rotor to the eccentric shaft, only one power stroke per shaft revolution actually occurs ; this engine provides three power ' strokes ' per revolution per rotor giving it a greater power-to-weight ratio than piston engines.

While not as strong as permanent dipoles, orientation with the external field still occurs.

While this state is highly stable, it can switch to the lytic pathway in the process of prophage induction, which occurs when the host SOS response is triggered by DNA damage.

While the exact cause of primary lymphedema is still unknown, it generally occurs due to poorly developed or missing lymph nodes and / or channels in the body.

While some types of unemployment may occur regardless of the condition of the economy, cyclical unemployment occurs when growth stagnates.

While all motion in a mechanical system occurs in three dimensional space, planar motion can be analyzed using plane geometry, if all point trajectories are parallel to a plane.

While osteoporosis occurs in people from all ethnic groups, European or Asian ancestry predisposes for osteoporosis.

While the earliest extra-biblical directions for baptism, which occurs in the Didache ( c. 100 ), speaks to the baptism of adults, rather than young children, since it requires that the person to be baptised should fast, writings of the 2nd and early 3rd century indicate that some Christians baptized infants too.

While some evolutionary biologists claim that speciation events have remained relatively constant over time, some palaeontologists such as Niles Eldredge and Stephen Jay Gould have argued that species usually remain unchanged over long stretches of time, and that speciation occurs only over relatively brief intervals, a view known as punctuated equilibrium.

While the first reference to " guising " in North America occurs in 1911, another reference to ritual begging on Halloween appears, place unknown, in 1915, with a third reference in Chicago in 1920.

While major questions still surround the biochemical pathway for the transformation of vitamin K < sub > 1 </ sub > to MK4, studies demonstrate the conversion is not dependent on gut bacteria, as it occurs in germ-free rats and in parenterally-administered K < sub > 1 </ sub > in rats.

While far from universal, ancestor veneration occurs in societies with every degree of social, political, and technological complexity, and it remains an important component of various religious practices in modern times.

While this occurs another ingredient for the same dish needing high heat is being cooked at the bottom.

While the event may be specified by the contract, the actions that must be taken to make the injured party " whole " again are largely fact-based and unknown to the parties until the event occurs, while the maximum liability is often expressly limited by the contract.

While in a non-rotating black hole the singularity occurs at a single point in the model coordinates, called a " point singularity ".

While the first iron ore was likely meteoric iron, and hematite was far easier to smelt, in Africa, where the first evidence of iron metallurgy occurs, limonite is the most prevalent iron ore. Before smelting, as the ore was heated and the water driven off, more and more of the limonite was converted to hematite.

While flexion and extension consist of movements around a pair of transverse axes — passing through the lunate bone for the proximal row and through the capitate bone for the distal row — palmar flexion occurs mainly in the radiocarpal joint and dorsiflexion in the midcarpal joint.

While energy is always lost during a brake event, a secondary factor that influences efficiency is " off-brake drag ", or drag that occurs when the brake is not intentionally actuated.

While aboard Halsey's flagship, it occurs to Keefer that all of Queeg's documented actions could be interpreted as reasonable attempts to instill discipline, leaving them open to a charge of conspiring to mutiny.

While this still occurs in some jurisdictions, it has become increasingly rare, with physicians building an increasing confidence and trust in the work of paramedics.

" While descriptions of Gorgons vary across Greek literature and occurs in the earliest examples of Greek literature, the term commonly refers to any of three sisters who had hair of living, venomous snakes, and a horrifying visage that turned those who beheld her to stone.

While linearly polarized light occurs when the electric field vector oscillates only in one plane, circularly polarized light occurs when the direction of the electric field vector rotates about its propagation direction while the vector retains constant magnitude.

While I was a servant to Mr. Webster, he often sent me to her with a market-basket full of provisions, and told me whenever I saw anything in the house that I thought she was in need of, to take it to her.

While confident with women, he blushed whenever Richie's mother Marion (" Mrs. C ." to Fonzie ), who became like a surrogate mother to him, kissed him on the cheek.

While there, he won the NWA Georgia Southern Heavyweight Championship, the holder of which was generally first in line to challenge the NWA World Heavyweight Champion whenever he passed through the territory.

While having drinks with his friends in the local taverns, they would notice a silhouette of a dragon over him whenever he was drunk.

While her physical appearance remained consistent regardless of the artist depicting her during her time in The Sandman, her skin colour varied from green back to normal human tones and then back to a consistent green whenever she appeared in The Books of Magic.

While she is sadistic and power hungry, her character would usually become humorous whenever the Power Rangers defeated her ; this would end with the catchphrase " I've got such a headache!

While Penelope was curiously helpless whenever The Hooded Claw grabbed her, once he left her tied up for his fiendish plans to take effect, she usually became resourceful and ingenious, sometimes coming up with spontaneous and creative methodologies to escape her peril.

While harmless in itself, this feature caught the attention of a number of privacy advocates, and users with firewall software installed, who felt it was unnecessary for Windows to connect to Microsoft ’ s servers whenever a local search was performed.

While Beavis is conscious of his mother's promiscuity, it doesn ’ t seem to bother him much, as he often laughs along in agreement whenever Butt-head brings it up ( in fact, when Butt-head refers to Beavis's mom as a whore, Beavis nonchalantly says " She's not a whore, she's a slut, she doesn't charge for it ").

While, Feyerabend's position is that this solution is merely a verbal ornament whenever the standards are influenced by Popper's first world, the physical world, and they are not just developed in the third world.

While he was alive, I made no demands whatsoever, but now that he's gone, whenever the Marshmallow Sofa is referred to as a ' George Nelson design ', it sort of gets to me.

* While much of his time today is taken up by his official duties and his medical practice, Deuell still plays the drums whenever asked for charitable events.

While not a leitmotif, the score does transition from full orchestra to pipe organ whenever Jesus Christ appears.

While they may be opposed to the Gods of Dunmanifestin, by the Discworld definition, the Ice Giants are nonetheless gods, and are worshipped whenever one of their rather inaccurate effigies ( snowmen ) are made.

While the film is nearly entirely in black-and-white, paying homage to older samurai movies, this allows for the artistic and dramatic use of color ; this is most noticeable whenever a character is killed, and the screen flashes red for a moment.

While the lights are on, whenever a lighting command is issued, whether it changes the lighting intensity or not, the 15-minute countdown is reset.

The hypothesis itself is as follows: “ animals of different sizes tend to move in dynamically similar fashion whenever the ratio of their speed allows it .” While the dynamic similarity hypothesis may not be a truly unifying principle of animal gait patterns, it is a remarkably accurate heuristic.

While she laughs at this, Homer makes his way to the roof and states that whenever injustice and evil rears its head, Pie Man will return.

While rodeoing wasn't the way of life his parents exactly wanted for him, they never discouraged him, and helped him whenever they could.

While chemical accidents may occur whenever toxic materials are stored, transported or used, the most severe accidents are industrial accidents, involving major chemical manufacturing and storage facilities.

While never explicitly referred in the show, that look was used as an " in-between " during his stock footage transformation, as well as whenever Metroplex had to fit in smaller spaces.

While Hicks ' statements in her book could be interpreted as stemming from only an intimate mentoring relationship with Chan, whom Hicks clearly idealized with high admiration, Hicks continued to be ambiguous on the matter whenever questioned, if only to fuel a sense of mystery about herself, and thus ongoing buzz and publicity.

While studying at the Liepāja gymnasium and later at the St. Petersburg University, he collected Lithuanian folklore and distributed Lithuanian language books whenever he returned home on his vacations.

While a Terminator allows the addition ( or subtraction ) of modules without additional work, a Tuner must be're-tuned ' whenever the network is changed ( i. e. removing / adding modules and adding / removing network cable.