visible light (helium-neon) laser
The first visible light (helium-neon) laser to operate in the United Kingdom, made at the Services Electronics Research Laboratories, Baldock, about 1962 (former RSRE museum no. 70)
The first visible light (helium-neon) laser to operate in the United Kingdom, made at the Services Electronics Research Laboratories, Baldock, about 1962 (former RSRE museum no. 70)