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He found that pressure increases luminosity, so that hydrogen, for example, the flame of which gives no light in normal circumstances, burns with a luminous flame under a pressure of ten or twenty atmospheres, and the inference he drew was that the presence of solid particles is not the only factor that determines the light-giving power of a flame, Further, he showed that the spectrum of a dense ignited gas resembles that of an incandescent liquid or solid, and he traced a gradual change in the spectrum of an incandescent gas under increasing pressure, the sharp lines observable when it is extremely attenuated broadening out to nebulous bands as the pressure rises, till they merge in the continuous spectrum as the gas approaches a density comparable with that of the liquid state.
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found and pressure
Several germanium resistors have been thermally cycled from 300 to 4.2 Af and their resistances have been found to be reproducible within 1/3 millidegree when temperatures were derived from a vapor pressure thermometer whose tubing is jacketed through most of the liquid helium.
Originally synthesized from compounds found in pit viper venom, ACE inhibitors inhibit angiotensin-converting enzyme ( a component of the blood pressure-regulating renin-angiotensin system ), thereby decreasing the tension of blood vessels and blood volume, thus lowering blood pressure.
An identical expression to Einstein's formula for the diffusion coefficient was also found by Walther Nernst in 1888 in which he expressed the diffusion coefficient as the ratio of the osmotic pressure to the ratio of the frictional force and the velocity to which it gives rise.
This new design was licensed by the British, who produced ball point pens for RAF aircrew as the Biro ; they found they worked much better than fountain pens at high altitude, the latter being prone to ink-leakage in the decreased atmospheric pressure.
Their study found that using bicycle seats without protruding noses reduced pressure on the groin by at least 65 % and significantly reduced the number of cases of urogenital paresthesia.
Astronomers did not observe large amounts of water following the collisions, and later impact studies found that fragmentation and destruction of the cometary fragments in an ' airburst ' probably occurred at much higher altitudes than previously expected, with even the largest fragments being destroyed when the pressure reached, well above the expected depth of the water layer.
In 1857, German physicist and glassblower Heinrich Geissler sucked even more air out with an improved pump, to a pressure of around 10 < sup >− 3 </ sup > atm and found that, instead of an arc, the glow filled the tube.
Some research found that chocolate, eaten in moderation, can lower blood pressure.
In 2000 the United Nations Food and Agriculture Organization ( FAO ) found that " the role of population dynamics in a local setting may vary from decisive to negligible ," and that deforestation can result from " a combination of population pressure and stagnating economic, social and technological conditions.
With the loss of the IBM deal, Gary and Dorothy found themselves under pressure to bring in more experienced management, and Gary's influence over the company waned.
Low partial pressure of atmospheric oxygen such as found at high altitude or by reduced replacement of oxygen in the breathing mix.
Towards the end of the period, numerous examples of extremely fine metalwork begin to be found deposited in rivers, presumably for ritual reasons and perhaps reflecting a progressive shift of emphasis away from the sky and back to the earth, as a rising population increasingly put the land under greater pressure.
David Lloyd George, the British Prime Minister, at the time, found himself under increasing pressure ( both internationally and from within the British Isles ) to try to salvage something from the situation.
When the Australian television programme 60 Minutes challenged her to demonstrate how she could live without food and water, the supervising medical professional Dr. Beres Wenck found that after 48 hours Jasmuheen displayed symptoms of acute dehydration, stress and high blood pressure.
SSV run at partial atmospheres ( typically around 1 / 3 of full atmospheric pressure ) in a hybrid of vacuum and conventional kiln technology ( SSV kilns are significantly more popular in Europe where the locally harvested wood is easier to dry versus species found in North America ).
Therefore the pressure difference between the applied pressure P < sub > a </ sub > and the reference pressure P < sub > 0 </ sub > in a U-tube manometer can be found by solving.
Evidence of trepanation, the surgical practice of either drilling or scraping a hole into the skull with the purpose of curing headaches or mental disorders or relieving cranial pressure, being performed on patients dates back to Neolithic times and has been found in various cultures throughout the world.
File: Evangelista Torricelli2. jpg | Evangelista Torricelli ( 1608-1647 ): invented the barometer ( a glass tube of mercury inverted into a dish ), found that the change of height of the mercury each day was from atmospheric pressure, worked in geometry and developed integral calculus, published findings on fluid and projectile motion in his 1644 Opera Geometrica ( Geometric Works )
One of his other findings resulted from measurements of the dependence of the intensity of the electric photo current on the gas pressure, where he found the existence of an optimal gas pressure P < sub > m </ sub > corresponding to a maximum photocurrent ; this property was used for a creation of solar cells.
It was soon found that replacing the lanthanum with yttrium ( i. e., making YBCO ) raised the critical temperature to 92 K, which was important because liquid nitrogen could then be used as a refrigerant ( the boiling point of nitrogen is 77 K at atmospheric pressure ).
These are commonly found at refineries, district heating units, pulp and paper plants, and desalination facilities where large amounts of low pressure process steam are available.
According to Preston ( 1894 / 1904 ), Regnault found constant pressure air thermometers unsatisfactory, because they needed troublesome corrections.
found and increases
Studies have found that generosity increases linearly from sad to happy affective states.
Usually, if the enthusiasm of the novice increases over time, random coins found in circulation are not enough to satisfy their interest.
A 2008 research report found that conservatives are happier than liberals, and that as income inequality increases, this difference in relative happiness increases, because conservatives ( more than liberals ) possess an ideological buffer against the negative hedonic effects of economic inequality.
Anchoring has been particularly identified as relevant in climate change controversies as individuals are found to be more positively inclined to believe in climate change if the outside temperature is higher, if they have been primed to think about heat, and if they are primed with higher temperatures when thinking about the future temperature increases from climate change.
One study found that population increases due to high fertility rates were a primary driver of tropical deforestation in only 8 % of cases.
It is found that increasing the intensity of the incident radiation ( so long as one remains in the linear regime ) increases only the number of electrons ejected, and has almost no effect on the energy distribution of their ejection.
Though the effect is most associated with IQ increases, a similar effect has been found with increases of semantic and episodic memory.
In September 2007, research financed by Britain's Food Standards Agency and published online by the British medical journal The Lancet, presented evidence that a mix of additives commonly found in children ’ s foods increases the mean level of hyperactivity.
Subsequent attempts to verify the claims requested payroll cards from employers to verify employment, and found that the minimum wage increases were followed by decreases in employment.
Normally, cytokine production in and around the wounded area increases in order to fight infection and control healing ( and, possibly, to control pain ), but pre-incisional morphine administration ( 0. 1-10. 0 mg / kg ) reduced the number of cytokines found around the wound in a dose-dependent manner.
A large multisite U. S. study found that cervical motion tenderness as a minimum clinical criterion increases the sensitivity of the CDC diagnostic criteria from 83 % to 95 %.
In the Hg-based superconductor, T < sub > c </ sub > is also found to increase as the CuO < sub > 2 </ sub > layer increases.
A 2010 study has found that taking an afternoon nap increases learning capacity.
The number of transcription factors found within an organism increases with genome size, and larger genomes tend to have more transcription factors per gene.
Research has found that the mortality rate during a heat wave increases exponentially with the maximum temperature, an effect that is exacerbated by the UHI.
This random controlled study has found that a period of working memory training increases a range of cognitive abilities and increases IQ test scores.
It was found that " increasing movement extent was associated with parallel increases of rCBF in bilateral basal ganglia ( BG ; putamen and globus pallidus ) and ipsilateral cerebellum.
The use of elastic energy storage has been found in jumping mammals as well as in frogs, with commensurate increases in power ranging from two to seven times that of equivalent muscle mass.
In 2005 the Office of Fair Trading ( OFT ) provisionally found that the school exchanged detailed information about prospective fee increases with approximately 50 other prominent UK independent schools, including Eton and Sevenoaks.
In 2005, the Office of Fair Trading found fifty independent schools, including Eton, to have breached the Competition Act by " regularly and systematically " exchanging information about planned increases in school fees, which was collated and distributed among the schools by the bursar at Sevenoaks School.
On the other hand, measurable changes in size and increases in variability associated with domestication occurred later, about 2500-2000 BCE, as seen in horse remains found at the site of Csepel-Haros in Hungary, a settlement of the Bell Beaker culture.
By analysing the spectrum of the chromosphere, it was found that the temperature of this layer of the solar atmosphere increases with increasing height in the chromosphere itself.
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