Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics The form of the
hydrogen molecule in which the twonuclei haveantiparallel spin ; about 25% of hydrogen at room temperature.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The melting and boiling points of parahydrogen are about 0. 1°C lower than those of normal hydrogen.
Hydrogen 2008
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If they are oriented in opposite directions, it is _parahydrogen_.
Unwise Child Randall Garrett 1957
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Hyperpolarisation involves transferring the magnetism of parahydrogen to molecules, making them more visible to nuclear magnetic resonance, an important research tool in chemistry, and
The Engineer - News 2010
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Hyperpolarisation with parahydrogen is a technique developed at York University that can, it is claimed, dramatically increase the sensitivity of MRI, the scanning technology widely used in hospitals.
The Engineer - News 2010
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The melting and boiling points of parahydrogen are about 0. 1°C lower than those of normal hydrogen. isotope of hydrogen, H, is known as Protium, the other two isotopes are Deuterium (a proton and a neutron) and Tritium (a protron and two neutrons).
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The melting and boiling points of parahydrogen are about 0. 1°C lower than those of normal hydrogen. isotope of hydrogen, H, is known as Protium, the other two isotopes are Deuterium (a proton and a neutron) and Tritium (a protron and two neutrons).
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"Indeed," he rambled on, "Treadmore babbled for Heaven knows how long on the relative occurrence of parahydrogen and orthohydrogen on
Unwise Child Randall Garrett 1957
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