The Microscope Lamps are general-purpose illuminators used for microscope or other laboratory work. The lamp housing is designed to permit the passage of air to flow in through hidden slots in the underside and out through hidden slots in the upper surface. Air can pass but it does not permit the escape of light.
NOTE: The pale blue tint option provides a whiter light because the blue tint absorbs some of the red colours that are naturally present in the hot incandescent filament.