Physics Of Light And Light

Although, Galileo did not invent the telescope, he is thought as the inventor of the telescope. Hans Lippershey was the person who invented the telescope in 1608. Galileo learned about the spyglass in 1609. He thought that learning about spyglass was so exciting and interesting. His interest of the spyglass led him to the discovery of improving the telescope. In order to discover deeper, Galileo began to experiment with making the telescope and polished the lenses of his own telescope to increase the range about eight to nine times further. Due to Galileo’s improvement of his telescope’s range, he was the first person to discover sunspots, to see the moon’s craters, and to keep on track of the phases of

1. Although he's not the first to consider using a curved mirror instead of a lens, Newton was the first to successfully construct a telescope using this principle, a principle still used today in many telescopes

The telescope is an optical instrument designed to make distant objects appear nearer. It contains an arrangement of lenses or mirrors or both that gathers visible light, permitting direct observation or photographic recording of distant objects. (Lacki, B. C. 2011). With the use of telescopes we have been able to learn a lot more about the planets in our universe. It has helped us understand about some of the history of everything around us. Also it has been able to track asteroids and comets or any randomly flying objet in outer space that might become threatening to our planet.

The best technology available today for studying the chemical composition of stars and planets is spectroscopy, a scientific tool that dissects light into its component colours (Astronomy mag. P.31). “A planet within 100 light-years of Earth is close enough to provide sufficient light for scientists to dissect light into its component colors” (Ray Villard, Astronomy ). Spectrographs are used by astronomers to observe discrete spectra. Discrete spectra are produced by gases, such as … when specific wavelengths of light are absorbed or emitted by the gases. This causes dark bands to appear on the spectrum where the specific wavelengths of light are absent. A scientist can

2) Why are there different brightness of stars and how do we describe their brightness as compared to one another?

[27] Scientists can determine what a distant star is made of by looking at ____.

Newton and optics, in 1968 Newton made the first reflecting telescope, following the reflecting telescope in 1971 he discovered the spectrum, he finalized all his discoveries of optics in 1776.He wrote books on these discoveries defining optics,

By looking at the different wavelengths or the spectrum of light from a celestial object, you can tell many of its properties and features. To do this, the Hubble Telescope is equipped with various scientific instruments. Each instrument used

Introduction: The refracting telescope or the refracting lense inside, is really useful at seeing distant objects, making them appear larger and closer then it actually is, for e.g, it is mostly used for astronomers to look around space, having an eye on most planets.

While the exact origin of the telescope is unknown, a German-Dutch spectacle maker by the name of Hans Lippershey is often credited with its invention. Lippershey filed for the earliest known patent for a refracting telescope (see refractors below) in 1608. Soon after, famed astronomer Galileo Galilei built a similar telescope which provided about 3x magnification. Galileo used this and other telescopes he constructed for observing the sky, among other things, and soon turned their manufacture into a profitable business. Galileo found that the devices were popular among merchants who found them valuable at sea and useful as items of trade. Galileo published his first set of astronomical observations in 1610 in a brief disquisition entitled “Starry Messenger”, and later made important discoveries such as the phases of Venus, the moons of Jupiter (now known as the Galilean moons), and the sunspots of our Sun.

In 1609, Galileo Galilei, using “spyglass” which allowed one to see things closer than they appeared, made an early version of the telescope. With it, he observed the skies in a way no one had before. He discovered the moon isn’t perfectly globular, it has craters, the Sun has sunspots, Venus orbits the Sun (contrary to widespread belief in his time), and then he observed four “stars” around Jupiter (“Our Solar System”). Within

For the bulk of the physical sciences, accurate measurements require much more than simply going out and collecting data, as a social scientist would. In fact, a lot of measuring in the physical sciences is related to very distant objects or places, where the average scientist cannot probably ever reach. One thing physical scientists can rely on are the laws of physics and mathematics, which are the same both on here and in space. These can help make the untouchable tangible. For example, astronomers have an extremely difficult time working within their field of study because the stars and all of space are so far out of their reach. Astronomers explore worlds that no human will ever reach. Despite advances in technology that have allowed us to send probes far out into space, they often still cannot reach the vast distances of all of the stars that are visible from earth. Astronomers deal with a major problem in measurement: they have to measure and calculate the properties of objects that are millions of light years away, so far that no technology today would help bring any closer to the human touch. As a result, astronomers have had to figure out other methods for working with objects at such large distances. When they explore the stars, they often use mathematics as a way to generate observations of size, distance, and rate of speed for objects way out in space. Using what is known as parallax, astronomers can effectively gauge

The Newtonian telescope can be designed with a focal ratio that allows astronomers to see clearer because more light is allowed into the telescope

Astrophysics is the branch of astronomy that employs the principles of physics and chemistry to ascertain the nature of the heavenly bodies, rather than their positions or motions in space. A few of the objects studied are the Sun, other stars, galaxies, extrasolar planets, the interstellar medium and the cosmic microwave background. The study of our very own Sun has a special place in observational astrophysics. Due to the tremendous distance of all other stars, the Sun can be observed in a kind of detail unparalleled by any other star. Our understanding of our own Sun serves as a guide to our understanding of other stars. Their emissions are examined across all parts of the electromagnetic spectrum, and the properties examined include luminosity, density, temperature, and chemical composition. Because astrophysics is a very broad subject, astrophysicists typically apply many disciplines of physics, including mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic and molecular physics.

With today’s science, light becomes more specifically perceived as a spectrum. The specific name for this spectrum is the electromagnetic spectrum, which contains many types of waves (NASA, Electromagnetic Spectrum). In Figure 2, the spectrum shows a variety of wavelengths with specific wavelengths classified by its length. The range of wavelengths humans can see wavelengths that are around 400 – 700 nanometers (nm) as colors while all other electromagnetic waves are simply blind to humans. The interesting classes for light that are used to measure are microwave and infrared light. The laser is