Question

Glass absorbs ultraviolet (UV) rays from the Sun. Would a fraction of the incident UV light be reflected from the air/glass boundary?

Answer 1

Yes

Step-by-step explanation:

Any transparent surface in practical is neither a perfect absorber of electromagnetic waves neither a perfect reflector. Generally all the transparent surfaces reflect some amount of irradiation and the other parts are absorbed and transmitted.

That is given by as relation:

`\alpha+\rho+\tau=1`

where:

`\alpha=` absorptivity which is defined as the ratio of the absorbed radiation to the total irradiation

`\rho=` reflectivity is defined as the ratio of reflected radiation to the total irradiation

`\tau=` transmittivity is defined as the ratio of total transmitted radiation to the total irradiation