A magnifying glass can be used for water purification by focusing sunlight through the glass onto contaminated water. The heat from the concentrated sunlight can kill harmful bacteria and pathogens in the water, making it safer to drink.
Glass
a glass one
My cousin and I used a magnifying glass to see the paper.
The magnifying glass is only used in the Forgery Detection class on Counterfeit Island.
A small magnifying glass -- such as that used by a watchmaker or by a graphic artist -- is known as a "loupe."
A magnifying glass or pocket viewer can be used.
Magnifying glass is used with this lens
to produced a magnified image of an object.
A convex lens.
A concave mirror.
a magnifying glass or a microscope
A magnifying glass is typically made with a convex lens, usually made of glass or plastic. The lens is specially shaped to magnify objects when viewed through it. The handle of the magnifying glass is usually made of plastic or metal for easy handling.