Collimator
Videos
A collimator is a device which narrows a beam of particles or waves. “To narrow” can mean either to cause the directions of motion to become more aligned in a specific direction, or to cause the spati
Collimators used to record gamma rays and neutrons from a nuclear test.
Collimator for a neutron stream, University of Washington cyclotron
Parallax
Videos
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight and is measured by the angle or half-angle of inclination between those two lin
In this photograph, the Sun is visible above the top of the streetlight. In the reflection on the water, the Sun appears in line with the streetlight because the virtual image is formed from a different viewing position.
Contax III rangefinder camera with macro photography setting. Because the viewfinder is on top of the lens and near the subject, goggles are fitted in front of the rangefinder and a dedicated viewfinder is installed to compensate for parallax.
Failed panoramic image due to the parallax, since the axis of rotation of the tripod is not the same as the focal point.
Sculpture in Shrewsbury