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Who of these methods was use by some people to prevent eyeglasses from slipping?
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What force prevents people from sliding when they walk?
Friction. Gravity holds us to the floor, friction keeps us from slipping.
Image of object formed by a lens on the screen is not in sharp focus suggest a method to get clear focusing of the image on the screen without disturbing the position of the object lens or the screen?
You could insert a second lens in the focal path, between the object and the first lens. The second lens can be designed (or moved) to focus the image on the screen. This is the same function that eyeglasses do for people with poor vision. The second lens, the eyeglasses, are inserted between the viewed object and the lens of the eyes. The second lens is designed to correct the distortion of the eye lens, thus creating an in-focus object on the "screens" of the eyes.
How was a traffic light invented?
the traffic light was invented because back in the day people didnt know what to do when driving and cars were new and to prevent people from crashing and accidents they invented the traffic light
What does acanashia do medically?
Although the science doesnâ??t agree, many people take Echinacea for colds or to prevent getting a cold. Some people also take it because they think that it prevents cancer.
Why did Thomas Edison make the light bulb?
Thomas Edison made the lightbulb so that people would stop useing fossil oil also to prevent globale warming
What do ballet dancers rub on the soles of the shoes to prevent slipping?
The first answer was rubbish, soz. People use rosin and it is pronounced ror-zin. People put it on the bow of a violin to prevent the bow from slipping off the strings.
What do mean by anti skid tiles?
Tiles that are made specially to prevent people from slipping on them.
Why ramp at a railway station has a rough surface?
The rough surface is there to prevent people slipping over, especially if wet.
How can adding sand on a icy sidewalk prevent people from slipping and falling?
Sand is dry and rough so it causes friction Hope this helps ! :)
How did eyeglasses change history?
Eyeglasses changed history because now people could see better.
Why were eyeglasses made?
To make people see better.
Who identifies and tracks diseases as they occur in a group of people and develops methods to prevent or control the spread of diseases?
Epidemologist
What are things that people can wear that begin with the letter E?
-Earrings -Eyeglasses
What are the benefits of having grab bars in your shower?
The benefit of having grab bars in a shower are essentially to prevent people from falling. Often older people, or people with disabilities use these grab bars to help them getting in and out of the shower, or to hold on to if they feel themselves slipping.
What do the eyeglasses do for the people?
Eyeglasses help people see more clearly, however they are not for everyone. Only people with vision problems wear eyeglasses, such as myself. Because people have all kinds of different vision problems different prescriptions are assigned to the persons specific needs. If you wear glasses that don't belong to you are are the wrong prescription you will damage your own eyes and you yourself will require glasses.
When were the first eyeglasses made?
== == The ancestry of eyeglasses dates back to 4 BC, when people utilized water to magnify items for clearer viewing. The modern framed eyeglasses were known to exist as early as 1285, then referred to as "spectacles". By definition, eyeglasses are devices used to correct impaired vision, be it farsighted or nearsighted. Today, eyeglasses are prescribed lenses fitted on a frame to that rest on the bridge of your nose.One of the first people to wear "glasses" was Roman emperor Nero. He used a carved piece of emerald to help him see lions tearing apart people in the Roman games.
Why eyeglasses is made?
Eyeglasses are made to correct the vision of people who can't see well. They work by changing the way light enters our eyes so that we can see better.
