Photometric measurements reported in 1982 gave a rotation period of 8.452 hours.

Photometric measurements made in 1993 give a rotation period of 10.38 hours.

Many different units of measure are used for photometric measurements.

More complex forms of photometric measurement are used frequently within the lighting industry.

The large database of photometric measurements will give the opportunity for studying variable stars.

Photometric measurements made in 2000, when combined with earlier observations, showed a light curve with a period of 8.643 0.05 hours.

Telluric contamination can also be important for photometric measurements.

Integrating spheres are used for a variety of optical, photometric or radiometric measurements.

Scientists can obtain sensitive photometric measurements of astronomical targets.

Photometric measurement is based on photodetectors, devices (of several types) that produce an electric signal when exposed to light.