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What else can I help you with?
How do glasses make people see?
They adjust the angle of light entering the eye to compensate for the flaw in the wearers vision
How do glasses solve the problem of short and long sightedness?
Short and long sightedness are caused by the lens of the eye focusing the light either in front of or behind the retina. Glasses alter the path of light going into the lens to adjust for this.
Where can I find more information on how magnifying glasses work?
Magnifying glasses work bending light through a convex glass lens or set of lenses. One great site to check is eHow.com; the answers provided are written so most people can understand the basics easily.
What investigational treatment for jet lag was developed by a research team from Flanders University?
a vision device that used light to stimulate travelers brains. They believed that wearing the glasses before and during flights could help the human clock adjust more easily to changing time zones.
Why would you need night vision glasses?
The pupil dilates in low light conditions to allow more light onto the retina. This will, in many people, result in more near-sighted vision at night than during the day. If you normally do not wear glasses or have progressed to the point of needing bifocal, trifocal, or progressive lenses (presbyopia) you may need a different prescription to fully correct your vision in low-light environments.
How long does it take your eyes to adjust to darkness after being exposed to light?
a few minutes--it takes longer to adjust to darkness than to adjust to light fun fact: people who lack vitamin A often suffer from night blindness
Reading glasses use what property of light waves to help people see better?
Reading glasses use the property of light waves called refraction. The lenses in reading glasses help to focus light rays onto the retina at the back of the eye, making objects appear sharper and clearer.
Is there any light that people can't see?
UltraViolet. It's an invisible light that can't be seen with the naked eye. Even with glasses.
A student wears glasses to help her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses?
Refraction -apex
How do glasses reflect light?
Glasses reflect light because of their smooth and polished surfaces. When light hits the surface of the glasses, it bounces off in a predictable way, creating a reflection. This reflection allows us to see objects clearly through the glasses.
Does light pass through glasses?
Yes, light can pass through glasses because they are transparent materials. However, some types of glasses may have coatings or properties that can affect how much light is transmitted through them.
What is wrong with peoples eyes if they have to wear glasses?
They aren't round. The lens of the eye focuses light on the back of the eye. The focal point is pretty precise. If the eye, through age, injury, or genetics, forms slightly off, it makes it difficult for the light to be properly focused on the back. Glasses adjust the light so that the eye's lens causes it to happen properly. The lens can also be mis-shaped. The number of diopters off being round the eye is is a measure of how bad the eyes are. And the lens can cause astigmatism, which is a challenge for the focus.
