Tolman surface brightness test | The Gardens of Perfect Brightness (''yuan ming yuan'') at the Old Summer Palace |
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico during 2010 gave a light curve with a rather long rotation period of 26.038 ± 0.002 hours and a brightness variation of 0.56 ± 0.03 in magnitude.
Photometric observations of this asteroid during 2008 at the Organ Mesa Observatory in Las Cruces, New Mexico gave an asymmetrical, bimodal light curve with a period of 7.9597 ± 0.0001 hours and a brightness variation of 0.46 ± 0.03 in magnitude.
A 1979 study of the Algol-like light curve produced by this asteroid concluded that it was possible to model the brightness variation by assuming a binary system with a circular orbit, a period of 13.146 hours, and an inclination of 15° to the line of sight from the Earth.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico in 2011 gave a light curve with a period of 37.394 ± 0.002 hours and a brightness variation of 0.10 ± 0.01 in magnitude.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico during 2008 gave a light curve with a period of 18.609 ± 0.002 hours and a brightness variation of 0.15 ± 0.02 in magnitude.
Photometric observations of this asteroid made during 2007 at the Organ Mesa Observatory in Las Cruces, New Mexico gave an asymmetrical bimodal light curve with a period of 12.176 ± 0.002 hours and a brightness variation of 0.17 ± 0.02 in magnitude.
Photometric observations of this asteroid from the Organ Mesa Observatory in Las Cruces, New Mexico during 2010 gave a light curve with a period of 31.900 ± 0.001 hours and a brightness variability of 0.42 ± 0.04 in magnitude.
Photometric observations of this asteroid at the Oakley Observatory in Terre Haute, Indiana during 2006 gave a light curve with a period of 6.572 ± 0.002 hours and a brightness variation of 0.34 ± 0.05 in magnitude.
Photometric observations of this asteroid carried out from Golden Hill Observatory in Stourton Caundle and Palmer Divide Observatory in Colorado Springs, Colorado produced a light curve with a period of 5.7279 ± 0.0002 hours and a brightness variation of 0.75 ± 0.02 in magnitude.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico during 2012 gave a light curve with a period of 13.175 ± 0.002 hours and a brightness variation of 0.09 ± 0.01 in magnitude.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico during 2010 gave a light curve with a long rotation period of 41.79 ± 0.02 hours and a brightness variation of 0.10 ± 0.02 in magnitude.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico during 2012 gave a light curve with a period of 27.888 ± 0.002 hours and a brightness variation of 0.35 ± 0.02 in magnitude.
Photometric observations of this asteroid made during 2008 at the Organ Mesa Observatory in Las Cruces, New Mexico gave a light curve with a period of 17.270 ± 0.002 hours and a brightness variation of 0.08 ± 0.01 in magnitude.
Photometric observations of this asteroid from Leura, Australia during 2006 gave a light curve with a period of 5.8403 ± 0.0005 hours and a brightness variation of 0.20 ± 0.02 in magnitude.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico in 2011 gave a light curve with a period of 12.266 ± 0.001 hours and a brightness variation of 0.13 ± 0.02 in magnitude.
the overall brightness of the color resulting in the desired color perception: an extremely bright light source will always be seen as white, irrespective of spectral composition.
The comet's sudden appearance very close to the sun and rapid subsequent decline in brightness both pointed to it being a sungrazing comet, and calculations of its orbit by Brian Marsden backed this suggestion.
The Canadian concept was trialled in American aircraft including B-24 Liberators and TBM Avengers in the Yehudi lights project, using forward-pointing lamps automatically adjusted to match the brightness of the sky.
This effect is used in the Campbell–Stokes recorder to record the brightness of sunlight by burning the surface of a piece of cardboard placed near the sphere.
The Danjon Scale of lunar eclipse brightness is a five-point scale useful for measuring the appearance and luminosity of the Moon during a lunar eclipse.
#SS Cygni stars (UGSS), which increase in brightness by 2-6 mag in V in 1–2 days, and return to their original brightnesses in several subsequent days.
These authors recorded the activity in different brain areas when observers were presented with a Cornsweet visual stimulus, and compared the activities with those elicited by a similar image, which however did not elicit any brightness filling-in.
The minimum required highlight brightness varies based on the type and level of Flight Simulation Training Device (FSTD), but is generally 3–6 foot-lamberts for most devices qualified under Federal Aviation Administration (FAA) or Joint Aviation Authorities (JAA) regulations.
While gravitational lensing preserves surface brightness, as dictated by Liouville's theorem, lensing does change the apparent solid angle of a source.
An Eastern Orthodox architectural style was deliberately chosen for the monastery, as buildings of this type "are very colorful and have a large variety of materials" and are "often lit naturally, with extremes of darkness and brightness," providing an ideal showcase for the HDR lighting effects.
These pulsating horizontal-branch stars are known as RR Lyrae variable stars and they are obviously variable in brightness with periods of up to 1.2 days
the old name of the Old Summer Palace in Beijing, China, also known as the Gardens of Perfect Brightness
Orthochromatic photographic plates, in combination with a color filter counter-acting the plates' inhomogeneous sensitivity to light of different wavelengths, yielded black and white images showing all colors of the light in their true brightness.
Following the original Greek meaning of Photography (Greek φῶς, phos, genetive: φωτός, photos, "light" (of the luminary), "brightness" and γράφειν, graphein, "drawing", "carve", "create", "write") it is a symbiosis of light art and photography.
This glowing orange trail of gas, visible over the Indian Ocean with the brightness of a sixth-magnitude star for a few minutes, was photographed by Mstislav Gnevyshev at the Mountain Station of the Main Astronomical Observatory of the Academy of Sciences of the USSR near Kislovodsk.
This measure should not be confused with the astronomical magnitude logarithmic scale of brightness.
On PAL C64s, the PAL delay line in the monitor or TV which averages the color hue, but not the brightness, of consecutive screen lines can be used to create seven nonstandard colors by alternating screen lines showing two colors of identical brightness.
The two galaxies are listed together in the Atlas of Peculiar Galaxies as an example of a spiral galaxy with a high surface brightness companion.
The brightness of their light is legendary and Peter Martyr d'Anghiera in his 1516 "History of the West Indies" notes that the Islanders tied a few beetles to their toes to light their way at night, but also spreads the myth that adult beetles feed on mosquitoes.
The Chinese astrologer Zhou Keming, who was on his return to Kaifeng from his duty in Guangdong, interpreted the star to the emperor on May 30 as an auspicious star, yellow in color and brilliant in its brightness, that would bring great prosperity to the state over which it appeared.
The more reliable contemporary reports state that the new star itself burst forth sometime between November 2 and 6, in 1572, when it rivalled Venus in brightness.
Some models use incandescent bulbs, while others use LEDs with electronically controlled power regulation and adjustable brightness.
Tolman surface brightness test: a cosmological effect causing the surface brightness of distant galaxies to reduce as (1+z)^4
With a historical Chinese theme and taking place in the Qing dynasty, The Legend of Lotus Spring featured a real-world location, Beijing's Yuan Ming Yuan, the Garden of Perfect Brightness, which was destroyed in 1860 and is currently a ruin.
They have reduced chloride sensitivity, faster maturation, and increased brightness (defined as the product of the extinction coefficient and quantum yield).