com [ILLUSTRATION OMITTED] Heritage Watch Manufactory: The Firmamentum A unique measurement and navigation instrument Technical specifications: * Independent manufacture; calibre 870 * Hand bevelled movement plates * 3 patents pending * Hour angle instrument for the observation of heavenly bodies by means of 13 hands with two additional displays * Polished/satinised Eric Giroud steel case; domed sapphire glass * German silver plate and white gold applications designed by Eric Giroud * Leather/alligator brace
What does HA stand for?
HA stands for Hour Angle
This definition appears very frequently
See other definitions of HA
We have 65 other meanings of HA in our Acronym Attic
- Home Alone
- Home Assignment
- Home Automation (residential housing controls)
- Homelan Alliance (gaming clan)
- Honorary Alumnus
- Hospital Acquired (Infection)
- Hospital Authority
- Hospitality Association
- Hospitalman Apprentice (US Navy rating)
- Hostile Aircraft
Samples in periodicals archive:
The hour angle at sunrise or sunset on an inclined surface [omega]st will be lesser than the value obtained by equation.
The direct radiation is empirical established depending on the extraterrestrial radiation, the medium solar constant, the day number during a year, the distortion factor, the solar altitude angle, the solar declination, the latitude angle, the solar hour angle, and the local solar time.