hnu


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Symbol for photon, and represents photon energy, where h = Planck's constant and ν = frequency of electromagnetic wave.
References in periodicals archive ?
1-10 (holotype female and 2 paratype females from Guangxi, China, deposited in HNU, not examined); Chen et al.
Estepa, HNU president, said he hopes there will be an exchange of knowledge on new issues, current trends affecting the tourism industry.
More information: HNU, 617-964-6690; fax: 617-558-0056.
We are not only saving electric bill, but HNU is helping conserving the environment.
To date, HNU Systems has sold more than 1,600 Hanby field-test kits to detect gasoline, crude oil, PCBs, and other contaminants in water and soil.