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This may or may not answer your actual question; the wording is a little ambiguous.
Fresnel originally developed the lens style named after him for use in lighthouses. The lenses used in lighthouses needed to be very large and have a short focal length, but short focal length lenses need to be highly curved. That combination means that in a plano-convex lens, the middle is much thicker than the edges, and not only does the lens require a lot of (expensive) glass, it's heavy and has thin fragile edges.
The lens Fresnel designed overcame these problems, and so made it possible to for lighthouses to have extremely large and powerful lenses that previously would have been impractical.
What else can I help you with?
What navigation instrument is most useful when land is out of sight?
When land is out of sight, a radar is the most useful navigation instrument. It allows mariners and pilots to detect and track other vessels, land formations, and obstacles, providing critical information about their surroundings. Additionally, GPS (Global Positioning System) can be utilized for precise positioning and navigation, ensuring safe travel over open water or remote areas.
What is a Water way built to carry water for navigation or irrigation?
A water way built to carry water for navigation or irrigation is a canal.
How can a fresnel lens be used to concentrate solar heat effectively?
A Fresnel lens can be used to concentrate solar heat effectively by focusing sunlight onto a small area, increasing the intensity of the heat. This concentrated heat can then be used for various applications such as generating electricity or heating water.
Will contact lenses expand in water?
No it doesn't!!
if you need to see water depths and navigation routes for travel on water, you need to get a?
To know water depths you need a fathometer. For navigation GPS is recomended.
How do you keep water out of headlight lens?
I drilled 2 small holes in the back and on the bottom of the lenses. Mine kept getting water in the lenses and fogging them up. I also had trouble with the water coming in contact with the bulb which would cause it to blow. I drilled 2 small holes in the back and on the bottom of the lenses. Mine kept getting water in the lenses and fogging them up. I also had trouble with the water coming in contact with the bulb which would cause it to blow.
How do g 15 xlt lenses compare to polarized lenses?
A polarized lens cuts more reflected glare but the actual protection of polarized lenses and G15 lenses are the same. Polarized sunglass lenses reduce glare reflected off roads, bodies of water, snow, and other horizontal surfaces where the G15 lenses do not.
Is friction useful to ship?
False
Can you swim with transition lenses?
Yes, you can swim with transition lenses. However, prolonged exposure to chlorine or saltwater can damage the lenses over time. It's recommended to rinse the glasses with fresh water after swimming to help preserve the lenses.
If you need to see water depths and navigation routes for travel on water you will use a map?
nautical
Are water snails useful?
Yes because they are very useful they make sure the water is save!
Where does the bending of light occur in the eye?
fish in the water, lenses, etc
