Description
A UV LED provides the UV source in this test rig. Because
of its construction there is no radiation hazard and students
can test the UV absorbing properties of various materials
such as lenses from sunglasses, various colored glasses,
reflective film etc. as well as the effectiveness of sunscreen creams. UV detection is by means of the UV beads
and intensity is estimated from the time taken for the color
changes to occur so approximate values only are obtained.
SP4-1739
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