Quick Answer: UVC Lamp with Bulb is a UVC lamp with a peak wavelength of 253.7 nm, housed in a robust aluminium extrusion and supplied with a 24 V d.c. power supply, primarily for demonstrating the photoelectric effect.
Last updated: October 2026
Key Features
Primarily intended to demonstrate the photoelectric effect with a zinc plate and gold leaf electroscope
UVC bulb housed in a robust aluminium extrusion
Peak wavelength 253.7 nm; must not be used as a general-purpose UV light source
Supplied with a 24 V d.c. power supply
Replacement bulb available
Technical Specifications
Specification
Value
Spectral peak
253.7 nm
Wattage
3 W
UV output
0.16 W
UV intensity
1.7 µW/cm² at 1 m
Power supply input
230 V a.c. 50/60 Hz
Power supply output
24 V d.c. 0.75 A (centre +ve)
About This Product
The lamp is used with a zinc plate and gold leaf electroscope to demonstrate the photoelectric effect, and it replaces a lamp that is now obsolete. It emits UVC light and must not be used as a general-purpose UV light source.
Frequently Asked Questions
Q1. What is the lamp used for? It is primarily intended to demonstrate the photoelectric effect using a zinc plate and gold leaf electroscope. It must not be used as a general-purpose UV light source.
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