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Translations for „helium“ in the English » Arabic Dictionary (Go to Arabic » English)

Monolingual examples (not verified by PONS Editors)

English
As of 2007, no stable neutral molecules involving covalently bound helium or neon are known.
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Such magnets, therefore, require regular topping-up with liquid helium.
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More massive stars spend an extended time on the horizontal branch and show a larger increase in temperature as they burn helium in the core.
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Generally a cryocooler, also known as a coldhead, is used to recondense some helium vapor back into the liquid helium bath.
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The ionization energy of helium is larger than that of hydrogen and it therefore recombines earlier.
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Hydrogen burning now takes place in a narrow shell surrounding the newly processed helium core.
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Copper is insensitive to hydrogen and impermeable to hydrogen and helium, has low sensitivity to water vapor, but is attacked by mercury.
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This period in a star's evolution corresponds to the core helium-burning phase, whereas the main sequence is the core hydrogen-burning phase.
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Proceeding outward, there is an oxygen-burning shell, followed by the neon shell, the carbon shell, the helium shell, and the hydrogen shell.
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This is far beyond what would be expected for a normal core helium burning star.
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