Magnifying Glasses in Bangladesh | AjkerDeal.com
Magnifiers are great for anything that needs magnifying. The glass lens used in these magnifiers provides durability for long life. We provide a clear magnifier that is designed for everyday use. They come with slim and handy designs and are also easy to carry anywhere.
They are ideal for reading, jewellery evaluating or finding anything small you lose. They are great for hobbies and crafts also. They come with a comfortable ergonomic handle so they are easy to hold. There is also a number of features including durable, scratch-resistant, shatterproof glass, and many more additional features.
Working Process of The Magnifying Glass
The magnifying glass is known as one of the most ancient optical devices. Thousands of years ago, Egyptians used obsidian or chips of crystal to enhance a small object. The famous English philosopher Roger Bacon designed the first magnifying glass for scientific purposes
during the thirteenth century.
Generally, magnifying glasses are made of double-convex lenses and they are used to make an object bigger. And this is done by placing the lens very close to the object so that it can be seen clearly. The light rays are bent towards the lens’ centre. When these bent rays reach the eye, they make the object larger than its actual size.
If the object is far enough away from the lens, the image will flip, and it will appear smaller and upside down. The distance at which this flip occurs is twice the focal length of the lens. The focal length of any lens is determined by how many curves are present on the lens’s face. The magnified image is called a virtual image. And the inverted image, as well as the smaller one, is known as the real image.
How Magnifying Glass Works
An object is placed in the focus of a convex lens within a distance. When looking at the object from the other side of the lens, you can see a straight, unrealistic and magnified image of that object. Now the extended image will be closer to the eye, the widening angle of the eye will be larger and the image will look larger. But if the image is formed closer than the point near the eye, the image will no longer be seen clearly. It will give a blurry look. When an object's image is formed at a distance close to the eye, that is, the visible point, it is most apparent in the empty eye. And for objects that are not visible to the naked eye, a convex lens with a slight focus distance is used to make them look bigger and clearer. This convex lens is called magnifying glass or a reading glass or a simple microscope. This lens is usually encased in a wooden or plastic frame. However, this lens does not provide much magnification.
Exceptional Use of A Magnifying Glass
Making a Fire
The match or the gaslighter you have is damaged in the rain. Now you need to light a fire. You will light a fire by rubbing stones on stones, there are no such stones. Take a magnifying glass with you when you go on these trips. You can't work with it during storms, but it will work when the sun rises after storms. This requires some dry combustible material. Cotton or dried leaves are good. Now go to the sunlight. Place the magnifying glass on the combustible material. You will see that after the sunlight passes through the glass, they will come together. A reflection of the sun will fall on the combustible material. The smaller the reflection, the more heat it will generate. Adjust the focal length of the magnifying glass so that the reflection of the sun is about the size of the mustard. Hold the glass for a minute like this. You will see smoke rising from the combustible object first. Holding it for a while longer or giving a little air to the combustible object will ignite the fire.
The Cause of the Fire
As it passes through the convex lens, the scattered light from the sun combines to form a bunch of rays. The heat that the light rays were carrying also passed through the magnifying glass and collected at a certain place. As a result, the place became hot, and at one point it caught fire.
Projectors Made with Magnifying Glass
Creating a projector will require a mobile phone, a magnifying glass, and a white wall in the room. Stick your mobile phone to a stand so that it is facing towards the screen. Play any video movie or song on a mobile phone. Then hold the magnifying glass in front of the phone screen.
Hold in such a way that the light of the mobile can pass through the magnifying glass and read the screen. At first, you may see blurry pictures on the screen. Slowly move the glass back and forth to adjust its focal length. When the glass is in the right place, you will see a clear picture floating on the screen, and it is several hundred times bigger than the screen of your mobile. But the picture you see on the screen is the opposite. This is because of the religion of the magnifying glass. A magnifying glass is made of convex lenses and convex lenses form inverted reflections. There are also easy ways to overcome this problem. Place the mobile phone upside down on the stand. Then the reverse picture of the mobile will float on the screen straight away. The better the resolution of the mobile phone, the clearer the picture on the screen. And if the video is of HD quality, you will get better image quality on the screen. However, the shorter the distance between the mobile phone and the screen, the better the image quality. Of course, the size of the picture will be smaller.
Some Example of Magnifying Glasses That Are Available in AjkerDeal
Optical Grade Magnifying Glass Lens
This lens has the power of enhancing up to 3x to 6x magnification.
It also has quality lenses. 100% genuine and authentic product. As it has a handle, it is portable and easy to use. There is some additional small lens is provided on the handle for various applications, like finding a small object, jewellery evaluating, etc. It has optical large lenses with 3x and 6x magnifying capacity, max power is 90mm.
Usage- This lens magnifies objects for viewing, great for both office and home use. It can be used by stamp and coin collectors, designers, students. The lens is also suitable for geography, gardening, jewellery, etc.
Magnifying Glass LongGA-008 With LED Glass
The magnifying glass’s model is LongGA-008. It has an illuminant. The LED light has a long life. It is very easy to use. It can be used as a torchlight at night. It has double lithium batteries. The glass is made in China.
There is also magnifying eyewear for large vision. They come with an optical quality lens. They also come with a unique design with small and lightweight which are easy to manage. The bridge is wide enough to fit comfortably across the nose.
They also come in a wide variety of shapes and sizes for you to choose from. They are ideal to use at home, office or workshop. They can easily fit in a pocket or purse also. They also come in a wide assortment of colors for you to choose from. All types of magnifiers are now available at our site. Find the perfect magnifier from Ajkerdeal.com.
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