* Pure fission weapons were the first nuclear weapons built and have so far been the only type ever used in warfare.

Pure fission weapons historically have been the first type to be built by a nation state.

Pure minimal deterrence is a doctrine of no first use, holding that the only mission of nuclear weapons is to deter a nuclear adversary by making the cost of a first strike unacceptably high.

* Pure fusion weapons have not been invented.

The same technology could theoretically be used to make very small and possibly " fission-free " ( very low nuclear fallout ) weapons ( see Pure fusion weapon ).

Pure substances can ( ideally ) form perfect crystals as T → 0.

Pure solar heaters are especially useful for laundries, swimming pools and external baths, because these can be scheduled for use on sunny days.

Worker at carbon black plant in Sunray, Texas ( photo by John Vachon, 1942 ) Pure carbon has extremely low toxicity to humans and can be handled and even ingested safely in the form of graphite or charcoal.

Operations such as these, and even more elaborate operations can also be performed in computer music programming languages such as Max / MSP, SuperCollider, Csound, Pure Data ( Pd ), Keykit, and ChucK.

Pure carnivores such as ferets lack β-carotene 15, 15 '- monooxygenase and cannot convert any carotenoids to retinals at all ( resulting in carotenes not being a form of vitamin A for this species ); while cats can convert a trace of β-carotene to retinol, although the amount is totally insufficient for meeting their daily retinol needs.

); a homemade shelter-ventilating pump ( a KAP ); large containers for water ; a plastic bottle of sodium hypochlorite bleach ; one or two KFMs and the knowledge to operate them ; at least a 2-week supply of compact, nonperishable food ; an efficient portable stove ; wooden matches in a waterproof container ; essential containers and utensils for storing, transporting, and cooking food ; a hose-vented 5-gallon can, with heavy plastic bags for liners, for use as a toilet ; tampons ; insect screen and fly bait ; any special medications needed by family members ; Pure potassium iodide, a 2-oz bottle, and a medicine-dropper ; A first-aid kit and a tube of antibiotic ointment ; long-burning candles ( with small wicks ) sufficient for at least 14 nights ; an oil lamp ; a flashlight and extra batteries ; and a transistor radio with extra batteries and a metal box to protect it from EMP.

Pure nickel shows a significant chemical activity that can be observed when nickel is powdered to maximize the exposed surface area on which reactions can occur, but larger pieces of the metal are slow to react with air at ambient conditions due to the formation of a protective oxide surface.

Pure crystals, though, can have distinct spectral transitions and the crystal arrangement also has an effect on the observed molecular spectra.

Pure enantiomers also exhibit the phenomenon of optical activity and can be separated only with the use of a chiral agent.

' True ' stock car racing, which consists of only street vehicles that can be bought by general public, is sometimes now called Street Stock, Pure Stock, Showroom Stock, or U-Car racing.

Pure strategies can be thought of as a special case of mixed strategies, in which only probabilities 0 or 1 are assigned to actions.

Pure thorium is soft, very ductile, and can be cold-rolled, swaged, and drawn.

Pure, regular crystals can sometimes be obtained from natural or synthetic materials, such as samples of metals, minerals or other macroscopic materials.

Pure, powdered pigments can be used, though some mixtures use oil paints or other forms of pigment.

Pure crystalline substances can exhibit different thermal conductivities along different crystal axes, due to differences in phonon coupling along a given crystal axis.

* Immanuel Kant ( 1724 – 1804 ), in the Critique of Pure Reason, distinguished between objects as phenomena, which are objects as shaped and grasped by human sensibility and understanding, and objects as things-in-themselves or noumena, which do not appear to us in space and time and about which we can make no legitimate judgments.

After the Amitabha doctrine, one can come to paradise ( in the Pure Land of Amitābha ), if they visualize at their death Amitābha in the heaven ( sun ) over their head ( western horizon ), think his name as a mantra and leave the body as a soul through the crown chakra.

Pure arrowroot, like other pure starches, is a light, white powder ( the mass feeling firm to the finger and crackling like newly fallen snow when rubbed or pressed ), odourless when dry, but emitting a faint, peculiar odour when mixed with boiling water, and swelling on cooking into a perfect jelly, which can be used to make a food for vegetarians very smooth in consistency — unlike adulterated articles, mixed with potato flour and other starches of lower value, which contain larger particles.

Pure, logic-only gate-array design is rarely implemented by circuit designers today, having been replaced almost entirely by field-programmable devices, such as field-programmable gate arrays ( FPGAs ), which can be programmed by the user and thus offer minimal tooling charges non-recurring engineering, only marginally increased piece part cost, and comparable performance.

Pure Manglish however can be likened to pidgin English, and it is usually barely understandable to most speakers of English, except Singaporeans who also speak a similar patois known as Singlish.

In 1781, Immanuel Kant ( 1724 – 1804 ) published his Critique of Pure Reason, in which he attempted to determine what we can and cannot know through the use of reason independent of all experience.

In Japan, however, Pure Land Buddhism also became an independent school in its own right as can be seen in the Jōdo-shū and Jōdo Shinshū schools.

Pure oxygen can be substituted for air to avoid the dilution effect, producing gas of much higher calorific value.

Uncharacteristically, Jefferson's first two recordings from this session were gospel songs (" I Want to be like Jesus in my Heart " and " All I Want is that Pure Religion "), released under the name Deacon L. J. Bates.

This name was officially adopted by the International Union of Pure and Applied Chemistry in 1949, becoming the second element after gallium to be named after France.

CMT only sporadically aired the series, usually in graveyard slots, and primarily held the rights in order to be able to air the musical performances as part of their music video library ( such as during the " Pure Vintage " block on CMT Pure Country ).

In March 1940 Jinnah passed what would come to be known as the “ Pakistan Resolution ,” declaring “ Muslims are a nation according to any definition of a nation, and they must have their homelands, their territory and their State .” This state was to be known as Pakistan, meaning “ Land of the Pure .” Nehru angrily declared that “ all the old problems ... pale into insignificance before the latest stand taken by the Muslim League leader in Lahore .” Linlithgow made Nehru an offer on 8 October 1940.

Along with Amitabha Buddha and the bodhisattva Mahasthamaprapta, She temporarily liberates beings out of the Wheel of Samsara into the Pure Land, where they will have the chance to accrue the necessary merit so as to be a Buddha in one lifetime.

Pure infantry conflicts could be lengthy and drawn-out.

In the first 9 days of the lunar 9th month festival, an oil lamp of 9 branches may also be lit to honour both the Northern Dipper and 2 other assistant stars ( collectively known as the Nine Emperor Stars ), sons of Dou Mu appointed by the Taoist Trinity ( the Three Pure Ones ) to hold the Books of Life and Death of humanity.

" In the United States, the Pure Food and Drug Act of 1906 required that certain specified drugs, including alcohol, cocaine, heroin, morphine, and cannabis, be accurately labeled with contents and dosage.

In the pure ideal of upper-stage socialism ( see: Pure communism ), such as that communism is supposed to be, the MoP are controlled by the workers production cooperative associations directly.

In 1971, the International Union of Pure and Applied Chemistry ( IUPAC ) said that for the purposes of specifying the properties of substances, " the standard pressure " should be defined as precisely 100 kPa (≈ 750. 01 torr ) or 29. 53 inHg rather than the 101. 325 kPa value of “ one standard atmosphere ”.

Pure pigments reflect light in a very specific way that cannot be precisely duplicated by the discrete light emitters in a computer display.

Oldsmobile boasted in a 1965 press release that “ a Jetstar I proved to be the top accelerator of the entire event ” at the 1965 Pure Oil Performance Trials in Daytona beach.

The Pure Food and Drug Act required that certain special drugs, including alcohol, cocaine, heroin, morphine, and cannabis, be accurately labeled with contents and dosage.