Human vision relies on light. After reflecting off surfaces, light enters into the eyes and travels through the cornea and pupil to produce an image on the retina. The eye is sensitive to a broad ...

The fact that so many people are stuck at home makes for strange opportunities. Italy’s confined populace has taken to singing from the balconies — and now researchers are asking them to use those ...

Dip into the complex metering modes on a modern digital camera and it’s easy to forget that photographers once relied on dedicated handheld devices to meticulously measure light before firing the ...

Laser Doppler vibrometers (LDVs) measure vibrations in ways that other sensors can't. From large aircraft structures to microscopic MEMS sensors, and Laser Doppler vibrometers (LDVs) measure ...

How does one go about measuring the amount of light in a given area? With a Light Meter of course! Maintaining proper lighting levels can be very important in places like schools, hospitals and even ...

Ophir Optronics Inc. has introduced two new measurement heads. The PD300-BB radiometer head has a spectrally flat response from 400-1,000 nm. and is recommended when the power measurement of broadband ...

A device that uses light to measure torsion — the amount of twist — of an object at the nanometre scale improves on the sensitivity of previous techniques. Measuring torsion is key to studies of a ...

Author/Title Polytec Inc. Tustin, Calif. Laser Doppler vibrometers (LDVs) measure vibrations where other sensors can't. They accurately track up to 30 Author/Title Polytec Inc. Tustin, Calif. Laser ...

In the last few weeks I've been working on a slightly more formal version of this post on black-body radiation for use in something else. One of the tricky things in writing about the development of ...