Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The adjustable table, sample, camera and lens are all housed within a dark box. The macro lens (1:25 90 mm Tamron) focal length is permanently set to 0.93 m and focus is achieved by altering the distance of the sample to the lens. The camera is connected to the PC, via USB, which is outside the dark box
