Bagnulo_2 - Armagh Observatory
... capabilities. This is specially true for spectropolarimetric measurements, when the Stokes profiles of spectral lines are often detected by measuring relative differences in signals of the order of 10-3 or less. We often believe that key to success is increasing photon counts, and that having collec ...
... capabilities. This is specially true for spectropolarimetric measurements, when the Stokes profiles of spectral lines are often detected by measuring relative differences in signals of the order of 10-3 or less. We often believe that key to success is increasing photon counts, and that having collec ...
Peter Ifland. E-mail: The History of the Sextant
... stars. Using this technique, the navigator at sea could measure the angle between the moon and a celestial body, calculate the time at which the moon and the celestial body would be precisely at that angular distance and then compare the ship’s chronometer to the time back at the national observator ...
... stars. Using this technique, the navigator at sea could measure the angle between the moon and a celestial body, calculate the time at which the moon and the celestial body would be precisely at that angular distance and then compare the ship’s chronometer to the time back at the national observator ...
Music Around the World
... blows through it The didgeridoo is believed to be at least 1,500 years old! Click here to listen to the didgeridoo! ...
... blows through it The didgeridoo is believed to be at least 1,500 years old! Click here to listen to the didgeridoo! ...
Name
... This is an instrument that enables you to establish the angle between two visually notable objects that appear some distance away from your vantage point. Notice that the telescope-like eyepiece is aimed at a surface comprised of a piece of clear glass and a mirror. With the sextant held vertically, ...
... This is an instrument that enables you to establish the angle between two visually notable objects that appear some distance away from your vantage point. Notice that the telescope-like eyepiece is aimed at a surface comprised of a piece of clear glass and a mirror. With the sextant held vertically, ...