Final answer:
The BGE mirror in vehicles reduces glare by adjusting the angle of the reflective surface to prevent direct reflection of light into the driver's eyes. Similarly, in photography, changing the camera angle or tilting glasses can prevent flash glare.
Step-by-step explanation:
The contemporary automotive mirror, often referred to as the Blinding Glare Eliminator (BGE) mirror, reduces glare using the principles of physics, specifically the angle of reflection. When light hits a surface, the angle at which it is reflected is equal to the angle at which it arrived. By adjusting the angle of a rearview mirror, the reflective surface can be positioned such that the light from the headlights of vehicles behind does not reflect directly into the driver's eyes, reducing flash glare.
Similarly, when taking photographs, to avoid the glare effect, one should not shoot directly at a reflective surface with a flash. Instead, the camera should be positioned at a slight angle so that the flash's light does not bounce directly back into the lens. This technique mirrors the adjustment of rearview mirrors in vehicles to avoid glare.
To further prevent glare when taking photographs, if a person wears glasses, their glasses can be tilted down slightly to change the angle of reflection, preventing the flash from reflecting directly back into the camera.