Essays on Telescopes

Galileo Galilei (1564-1642) was an Italian physicist, astronomer, philosopher, engineer and mathematician. He was a critical figure in the scientific revolution of the 17th century. Galileo is perhaps most synonymous with the invention of the modern telescope which has since helped man to discover countless things about the universe. In regard to astronomy, Galileo is erroneously credited with the discovery of the first telescope. His contribution was carrying out massive improvements on the existing telescopes. In 1609, Galileo learnt about the spyglass which was crudely used in ordinary life to view distant places on the land. Galileo began to ...

Philosophy

Introduction Man has always gazed at the stars and attempted to answer the question about the existence of any life anywhere else in the Universe apart from Earth. While for the better part of the first two thousand years After Christ, there was a popular assumption that Man is unique in the Universe, the acceptance of the ‘Copernican Principle’ (Tyson, 2003) in the 1500s, when Nicholas Copernicus put the sun back in its proper place at the center of the solar system, propelled the notion that man may not be unique after all. Given the fact that the three ...

Facts about the Earth

The Earth is the third planet from the Sun. It is situated at the distance of about 93 million miles from the parental star. The Earth`s orbit is elliptical. The Sun, the Moon as well as all the stars rise in the East and set in the West due to the rotation of the Earth around its axis. The Sun and the Moon moving together create the eclipse, when the Moon stands between the Earth and the Sun we see a solar eclipse, at that moment the Moon passes in front of the Sun obscuring it. In the ...

Introduction

The very title of this article may seem to some readers fantastic. Is there any evidence that alien beings exist? Can we prove that there is no clear scientific argument in favor of their life and activity? Such questions immediately arise among readers, of course, they are quite natural. And yet, I will try to show that the statement of the problem in our time of exclusively rapid scientific and technical progress is quite logic. Moreover, most recently the first steps towards the solution of this great problem facing mankind were taken. Basically, from the scientific point of view ...

A lens is an optical device used to alter the path of light in various optical applications. Lenses alter the path of light through refraction, which is phenomenon whereby the path of a ray of right shifts when it through materials with different density levels. Lenses are made from transparent materials, such as plastic or glass, which have been molded to give the required shape. A lens can be termed as either simple lens made from a single material, or a compound lens, which consists of an assembly of multiple lenses aligned along a common axis. Lenses are used ...

“That’s one small step for a man, one giant leap for mankind." Grandfather said this phrase with a confident voice. It is always the case when we are up late night; sitting on the roof, my grandfather pretends to be Neil Armstrong. He starts to tell us all about that day in July 1969, at 10:56 p.m. EDT, more than half a billion people were watching television waiting for Armstronghim to put his foot on the moon. He is so excited in playing Neil Armstrong’s part, and he keeps saying that this step helped us to evolve ...

Once, mankind believed that the Earth is the center of the solar system, and the entire universe as well. Though tempting as it seems, this narcissistic view was perceived due to the observable motions of the visible heavenly bodies in the sky. However, as mankind learns to invent more powerful tools to understand the cosmos, they learn not just the fact that the sun is the center of the solar system, but also the place of the Earth in the universe. In fact, the view of our place in the universe gradually changed as science and technology cemented over ...

The purpose of this paper is to develop a fundamental idea about the phenomenon of Supernovae and their significance in understanding the nature of our universe. This paper shall be trying to make an in-depth analysis of different types of supernovae that had been observed in universe and also the factors that cause them. Even though the paper does not go deeper into the technical aspects of observing supernovae and the characteristics of their each type, a significant amount of study has been conducted to make an understanding of how they are observed and the characteristics that make each ...