Cepheid Synthesis Essay

Throughout today’s society, media contributes to almost everyone’s daily life. From informative news channels to comical television shows, media proves to be effective in advertisement, releasing messages and informing the audience. Although media proves to be wildly effective in advertising, releasing messages and informing the audience, periodically destructive and misleading messages are provided to the audience and directly influencing women. Cultural critics widely agree that media tends to negatively influence women and all the critics point to research which supports the belief that women are portrayed as subordinate to men, having no

This problem wasn't solved until the 1920s, when Edwin Hubble devised the first method of extragalactic distance measurement. His technique relied on stars known as Cepheid variables, whose luminosities can be easily determined by measuring their rates of pulsation. Comparing this luminosity with the stars' observed brightness allowed Hubble to estimate the distance to Cepheid stars in such galaxies, affirming their extragalactic location.

It has recently been brought to my attention that our school is looking to adopt a sustainable menu into our meal program and I would like to give my viewpoint on the matter. As one many students here at Oxford Academy this change will affect me directly. Although people may at first oppose this conversion I think if we are able to overcome the first obstacles, this change would bring a great positive impact to the environment and the health of our students.

It is easy to flip to the index of an astronomy textbook to discover that, say, the Sun lies 150 million kilometers away from Earth.  It is far more difficult (if not impossible), however, to picture this distance in the human mind.  In this exercise, we will learn to access the often unpalatable distances encountered in astronomy by simply scaling the huge distances to more recognizable, pedestrian numbers.  So long as every distance within the system of interest is scaled by the same factor, we retain the meaningful information about relative distances between objects.

he short anecdote above accurately represents the situation of many students across the globe. Throughout the last decade, technology had exploded in a way so immensely that nothing and nobody can stop it. Not even educators. This is why taking the easy way out of assignments has become such a frequently used method by students everywhere. It is evident that students of this generation have become complacent in a “short-cut” society.

It is easy to flip to the index of an astronomy textbook to discover that, say, the Sun lies 150 million kilometers away from Earth. It is far more difficult (if not impossible), however, to picture this distance in our mind. In this exercise, we will learn to access the often unpalatable distances encountered in astronomy by simply scaling the huge distances to more recognizable, familiar numbers. So long as every distance within the system of interest is scaled by the same

With the first batch of surveyed jurors, the study found that the more often jurors watched a crime show (in this study CSI was the main crime show in question) the more accurate they thought the show was. Also, the study found that 46.3% of jurors expected to see some scientific evidence in every case, 21.9% expected to see DNA evidence in every case, and 36.4% expected to see fingerprint evidence in every case. With this information, the study found that the jurors who watched CSI had higher expectations for the presence of scientific evidence compared to the jurors who did not watch CSI. It is important to note, however, that even though the CSI jurors had higher expectations those expectations did not equate to higher rates of acquittals

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

Paragraph 6 contributes to the ideas by giving examples of how life in the camps really was. They weren't treated kindly or given the supplies they needed. They were treated like prisoners, even though most of them had done nothing wrong. In fact, most of the people put into camps were very patriotic american citizens. But, because of their ancestry they were horribly.

It is possible to determine the mass and age of a star using its light. Because the vast majority of the mass in a galaxy is in the form of stars, this method can extended to galaxies, or even clusters of galaxies. Ideally, the amount of mass in stars and

While working at the Union Observatory in Johannesburg, Innes used a blink comparator (used to find differences between photographs) and spotted something near the surrounding area of Alpha Centauri. After studying photographs of the star, Innes decided that he'd use a different form of equipment to gather more information

During the age of exploration there were many highly important inventions being made and also being used. One of the inventions from this time period is the astrolabe. The astrolabe is an ancient astronomical computer that was used mainly by navigators to solve problems in relation to not only time, but also problems relating to the position of the sun and the stars (“Morrison”). Astrolabes were historically used by astronomers, astrologers, and navigators. Astrolabes had many amazing uses like finding the time of day or time of night, finding the time of a celestial event like a sunrise or a sunset and could also be used as a reference of celestial positions and many more (“Morrison”).

Today we have new technology that allows us to do many incredible things. One of those things is the ability to calculate the stars, where they will go and where

The Hubble Space Telescope has been key in not only confirming the universe’s expansion but also the further defining the rate of the expansion. Edwin Hubble in 1929 provided the first evidence of the expansion of the universe and its finite age with his Hubble constant. The constant says that the farther a galaxy is the faster the acceleration, therefore the universe is expanding. The ability of the Hubble Telescope to resolve Cepheid variable stars farther out than could previously be done by ground based telescope allowed scientists to see further out and therefore longer periods of time than they ever could before. This ability to look further back in the past has allowed scientists to better define the expansion rate of the universe. When Hubble was first launched, the expansion rate was estimated between 50-100 km/sec/Mpc. In 1994 it was determined to be 80 km/sec/Mpc with a 10 percent rate of error. In 2009, scientists, using observations of Cepheids in faraway galaxies, were able to narrow

Previously, finding the distance of galaxies involved looking at their color in images from NASA's Hubble telescope. Now Hubble's Wide Field Camera 3 was used to find this God universe. It splits the light from the galaxy into manageable parts. Using