Lenses

of books led to the important requirement of glasses, which helps to correct awful vision (Visio-Rx). Glasses have changed over the years and they help us see the world clearly. I believe knowing how the eye works, the different types of corrective lenses, and discovering the types of distorted vision, helps us to be able to obtain better vision. First, during the 1400s glasses were created (Klein). Around 1500 Johannes…

Readers can draw many connections from two great poems. Gwendolyn Brooks is a writer that focusses on the uprooting and the inability to make a living in black communities. In the poem “The Explorer” by Gwendolyn Brooks, talks about the needs of every human being. The needs and wants that everyone desires. Robert Hayden faced a difficult childhood that he used to fuel his fire. In “Frederick Douglass” by Robert Hayden, he describes a burning passion we all have inside of us. Both of…

Sigma is a very popular lens company that creates lenses that fit onto any camera as long as you buy the right adaptor piece. Sigma is known for creating large millimeter lenses. Although, some of their camera lens that looks less like a camera lens, and more like military grade artillery. Meanwhile, Canon has created the world’s largest lens. The lens that is so…

In this essay I will be analyzing the poem “Same Song” by the writer Pat Mora.In this essay I will be using the Historical Criticism literaly lense to analyze this poem.In order to use this lense correctly I will need information about when the poem was written or I can use clues in the poem to help with that if it cannot be found clearly.After that information is found then I need to show how this period in time has an effect on the poem. When using this lens to analyze the poem I researched…

When you don't have perfect vision, it's not considered a life threatening or even life altering condition. It just means you need a pair of prescription glasses. It is remarkable how two pieces of clear plastic or glass mounted on a frame, work so well at restoring one of the most important of your five senses. If only other problems could be remedied so easily. How do prescription glasses work? To answer this, you need to understand how vision works. How Eyesight Works When light reflects…

Much like other displays of power, the same lenses we flaunt to remind ourselves how chic we are, unavoidably expose our hidden shortcomings and insecurities about the world around us (Cohen,2014). The telescope which was one of the central instruments of what had been called the scientific revolution of the seventeenth century revealed the unsuspected phenomena in the heavens. It was not until the completion of the thirteenth that lenses existed as they are today, even though their properties…

There are two types of lenses, converging and diverging lenses. Converging lenses cause parallel light rays to converge to a point. Diverging lenses cause parallel light rays to diverge. Typically converging lens are thicker in the middle and diverging lenses are thinner in the middle. Lenses are used for many applications they are used in glasses to correct eyesight, cameras to focus and capture light to form images, telescopes and also magnifying glasses. The theory of lenses can be very…

24th, 1632 and he died at age 90 on August 30. 1723. Leeuwenhoek was a scientist from Dutch, Netherlands and was also a tradesman. He contributed to the modifications of the microscope and helped in the improvement of microbiology. He made special lenses used in his microscope he had invented. Even though he didn’t have a lot of work or knowledge experience he was careful in watching details which made him skillful. This skill helped him make discoveries that were important in microbiology. It…

Different types of lenses cause light to react differently, but in each case, light will bend “toward the thickest portion” of the lens (Broten, 2000). One kind of lens, a concave lens, has the thinnest part of the lens in the middle and the thickest parts on the outsides. These lenses have a negative focal length and cause light to diverge. The spreading of light away from the center of the lens “moves the focal point forward” (Broten, 2000). Another type of lense, a convex lens, has the…

Task 1 Phones The first phone data communication was invented by Alexander Graham Bell in 1874-1876. But the very first person to be able to convey sounds over a taut extended wire by mechanical vibrations was Robert Hooke in 1667 so it’s the culmination of work done by many individuals until Alexander Graham Bell created a telephone. The earlier development is when sound waves are carried as mechanical vibrations along the string or wire from one diaphragm to the other. A very good example…