IN the course of some investigations on the electrical properties of helium at fairly high pressures (about 25 mm. mercury), it was found that, if the gas was excited in such a way as to produce ...

Helium is the second most abundant element in the universe, but also evanescent and thus hard to hold. It was discovered in 1868 as a yellow line in the spectrum of the solar corona, and named for ...

Facts about the element helium, including properties, sources, uses and isotopes. Skip ... In the spectrum of gases he observed in the chromosphere was a strange yellow line with a wavelength ...

When you think of helium, you probably think of blowing up a bunch of balloons. But that's just the tip of the iceberg for what it can be used for. In fact, the balloon market only accounts for 10% of ...

After a time this gas, when subjected to spectrum analysis, displays the characteristic yellow lines of helium. Ergo, one element, by a mere change of form, appears to have become another and ...

Helium is made either by the nuclear fusion process of the Sun, or by the slow and steady radioactive decay of terrestrial rock, which accounts for all of the Earth's store of the gas.

Direct Measurement of the Cosmic-Ray Helium Spectrum from 40 GeV to 250 TeV with the Calorimetric Electron Telescope on the International Space Station. Physical Review Letters , 2023; 130 (17 ...

Discovered in the 1800s in the solar spectrum, helium has been an element that has eluded humans for centuries. Despite being listed as one of the most abundant elements in the universe, this ...

1868: A French astronomer spots an unknown element, now known as helium, in the spectrum of the sun during a much-anticipated total eclipse. The event marks the first discovery of an ...

Collaboration has obtained a high-precision cosmic-ray boron spectrum in the energy range of 10 GeV/n–8 TeV/n, and discovered ...

Helium is named after Helios, the Greek name for the Sun, because scientists discovered the element thanks to a total solar eclipse. By the late 19th century, astronomers had gotten pretty good at ...

WHEN helium at a pressure of about 25 mm. of mercury is excited in such a way as to produce the line spectrum and the band spectrum in comparable intensity, McCallum and Wills1 find that the band ...