Argon

Argon The element Argon though was suspected to be presented in the air by Henry Cavendish in 1785 but it was first discovered by Lord Rayleigh and Sir William Ramsay in 1894 it was discovered in England . The name Argon originated from the Greek word ‘Argos meaning idle. Argon is the third Noble Gas in period eight of the periodic table, and makes up less than 1% of the Earths atmosphere. It was obtained when Rayleigh and Ramsay isolated air and exanimated the residue of air after Nitrogen

Argon was discovered in 1894 by Sir William Ramsay and Baron John William Strutt Rayleigh. Argon's innicial name was Argos which means inactive in Greek. The symbol for Argon is Ar and is located in family 18 and period 3. Family 18 is a group of Nobel Gases which are nonmetals making that element nonreactive.. The Atomic Number of Argon is 18. The Atomic Mass of Argon is 39.938. The melting point of Argon is 91.81 degrees K, -189.19 degrees C, -308.54 F. The boiling point of Argon is -185.7 degrees

     William Ramsay searched for sources of Argon in the mineral kingdom. He discovered Helium instead of Argon in a uranium-bearing mineral. Until this point, Helium was only known to exist on the sun. Ramsay determined that this element was in fact Helium by viewing the mineral’s bright yellow stripe under a spectroscope which

led to the discovery of krypton (Stewart). After removing oxygen and nitrogen from the gas with  the use of copper and magnesium, the chemists examined the gas’s spectrum within a  high­voltage vacuum tube (Stewart). Besides the anticipated presence of argon, two new spectral  lines, green and orange in color, were also observed; these lines represented a new element, later  named krypton after being removed from its ‘hiding place” within liquid air (Weast and Astle  B­22; Stewart). Following the discovery of the inert gases such as krypton

Sodium azide is a white powder that blow up the moment it bumps into metal. Once it bumps into water, it drives on to an acid that have the ability to eat through the human skin. It is rapidly working, possibly fatal chemical that is present as an unscented white solid. When it is blended through water or an acid, sodium azide transforms quickly to a poisonous gas with a strong scent. Furthermore, it transforms into a poisonous gas (hydrazoic acid) when it meets solid metals although the scent of

 Distances between nozzle of the plasma spray gun and surface has to 100mm to 150mm. G. The importance of the study By the end of the proposed project work we can achieve the market demand for the cheap and efficient feedstock material for plasma spray coating. Because fly-ash mechanical properties will boost both mechanical and thermal substrate properties. And also improve the durability of the metallic substrate due to improved wear resistances of the substrate. Cost of the feedstock material

Potassium-argon dating is a common-used dating method in archaeology, which has a range of dates from 4000 mya to 100,000 years ago. The source of this method is the radioactive potassium 40 with half-life 1.26 billion years, which largely exceed that of carbon 14, explaining the reason why potassium is widely used in dating extremely old materials. (McDougall) Although potassium 40 is rare in the nature compared with other potassium isotope, it is abundant in volcanic rock and ash. During decaying

technology such as the potassium argon method, and DNA analysis, biologists and archaeologists have found new ways to look back on where it all began. In 1967, scientists we're roaming the Omo Valley in Ethiopia and they discovered what was the first known, and documented member of our species in that of what was called “Omo 1.” (Video Sheet) Thrilled about the discovery, scientists needed to know how old the skeleton they found was. With the use of the Potassium-argon method, they were easily able

February 9, 2016 My Element Argon My element is Argon and its symbol is Ar. Argon is the third most common gas that is found in the earth’s atmosphere. Argon is a noble gas that is also used to keep light bulbs from bursting. Argon is located in period 3 group 18. Argon is also used to make titanium and other reactive chemicals. Argon is an odorless, colorless gas. Argon is the 3rd most abundant gas. Argon has 8 protons, 8 electrons and 2 neutrons in its shell. Argon was discovered by 2 men named

Abstract- A home-made dc sputtering is characterized by cathode potential of 250-2000 V and sputtering gas pressures of (3.5×10-2 – 1.5) mbar. This paper studies in experiment the breakdown of argon, a uniform dc electric field at different discharge gaps and cathode potentials. Paschen curves for Argon are obtained by measuring the breakdown voltage of gas within at different target cu,Au,Ag, vacuum chamber . The Paschen curves in Ar gases show that the breakdown voltage between two electrodes