Posts Tagged ‘Science’

Hubble Telescope

Monday, September 13th, 2010

One of the most important telescopes in the history of astronomy, the Hubble telescope has allowed observers to peer farther into space than any previous telescope. By moving outside and above the atmosphere of the earth, the Hubble telescope has been able to observe visual data much more clearly than a terrestrial telescope, and it has been able to see much farther into the ultraviolet and infrared spectrums as well, since these spectra are largely absorbed by the earth’s atmosphere. Thus, by moving the observing platform into open space, the Hubble telescope has given a much clearer view of the universe, allowing scientists to peer even deeper into space.

The Hubble telescope is named for Edwin Hubble, the astronomer who originally determined that the universe is expanding. This discovery, one of the foundations of modern astronomy and cosmology, made Hubble an excellent choice for the honor of having this telescope named for him.

The concept for the Hubble telescope was originally the idea of Lyman Spitzer back in 1946. He clearly saw that earth-based telescopes were inherently limited in their ability to see into the heavens, since dust, clouds, and even turbulence in the atmosphere interfered with telescopes’ clarity. Which meant that the best way to get a clear image from a telescope was with a telescope that was in orbit around the earth.

After some success with the smaller Orbiting Astronomical Observatory, the plan for a large scale telescope was born. There were some fits and starts however, mostly due to budget constraints, and the project did not really take off until the 1970’s and funding was not approved until 1978. Then, with funding in place, plans were made to launch the Hubble telescope in 1983. However, due to various delays, it was not actually launched until 1990.
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Different Branches Of Chemistry

Wednesday, February 17th, 2010

Chemistry is generally divided into two broad branches: organic chemistry and inorganic chemistry. Other types of chemistry include physical chemistry, biochemistry, and analytical chemistry, with each field branching off into several specific subfields. Here’s a brief description of the most common branches of chemistry.

Organic Chemistry

Organic Chemistry has to do with the study of compounds that contain carbon (and sometimes hydrogen). Even though carbon is only the fourteenth most common element on the planet, it produces the greatest number of different compounds on Earth. Not surprisingly then, much of the study of chemistry involves organic chemistry.

The most studied groups of organic compounds are those that contain nitrogen. These organic compounds are important because they are often linked to the amino group. When the amino group combines with the carboxyl group, amino acids are born. Amino acids are important because they are as the building blocks of proteins.
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Desert Problem For Young Earth Creation Science

Sunday, February 7th, 2010

Young-earth creationists have a problem. According to their creation model, all the fossil-bearing rock layers in the world need to be created during the Flood of Noah. Fossils, in ancient rock layers, imply that death occurred before the Fall of man, which is contrary to their interpretation of Scripture.

The most visible rock layers in the world are those in the Grand Canyon. For many years young-earth creation scientists have invested a lot of time and research into the Grand Canyon. They believe that if they can find a model to explain the canyon rocks, then their followers will probably accept the rest of the earth’s rocks as young.

Coconino Sandstone

One of the problems that the young earth model encounters in the Grand Canyon is the Coconino Sandstone. I’ve already discussed this in another article, so let me only summarize here. Geologists have stated that this formation of 315-foot thick sandstone was created by a desert environment, and is a deposition of wind-deposited sand dunes.

The problem for the young earth creationist is that this rock layer is topped by two other fossil-bearing marine rock layers, the Toroweap Limestone and the Kaibab Limestone. This presents a problem to the young-earth model because if the sandstone originated by wind, then obviously it could not have been produced by Noah’s Flood. The young-earth scientist would have to explain how the water receded, then the sandstone formed, then the water came back and deposited the other layers. However, in the Biblical Flood account, the waters rose, then fell. There were no cyclic water levels, nor was there a massive amount of time during the flood for a desert environment to create a 315-foot thick rock layer. The desert formation of this sandstone would disprove its formation during the Flood, and would disprove the young age of the earth.

Several young-earth scientists have attempted to explain this away, claiming that this sandstone was created underwater, and thus is not a desert sandstone. I dispute this theory because their model does not have the necessary forces to create the Coconino Sandstone (for more on this, see Coconino Sandstone). However, that is not the purpose of this article.

Other sandstones which are desert in origin will also disprove the young age of the earth. Therefore, the young-earth scientist must discredit every desert sandstone in the world. If one desert sandstone exists with a fossil-bearing ocean-deposited layer on top, it discredits the entire young earth flood model, and proves the old age of the earth.
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Biotechnology Timeline: Important Events And Discoveries In Biotechnology

Thursday, January 21st, 2010

1977:

The Age of biotechnology arrives with “somatostatin” – a human growth hormone-releasing inhibitory factor, the first human protein manufactured in bacteria by Genentech, Inc. A synthetic, recombinant gene was used to clone a protein for the first time.

1978:

Genentech, Inc. and The City of Hope National Medical Center announce the successful laboratory production of human insulin using recombinant DNA technology. Hutchinson and Edgell show it is possible to introduce specific mutations at specific sites in a DNA molecule.

1979:

Sir Walter Bodmer suggests a way of using DNA technology to find gene markers to show up specific genetic diseases and their carriers. John Baxter reports cloning the gene for human growth hormone.

1980:

The prokaryote model, E. coli, is used to produce insulin and other medicine, in human form. Researchers successfully introduce a human gene – one that codes for the protein interferon- into a bacterium. The U.S. patent for gene cloning is awarded to Cohen and Boyer.

1981:

Scientists at Ohio University produce the first transgenic animals by transferring genes from other animals into mice. The first gene-synthesizing machines are developed. Chinese scientists successfully clone a golden carp fish.

1982:

Genentech, Inc. receives approval from the Food and Drug Administration to market genetically engineered human insulin. Applied Biosystems, Inc. introduces the first commercial gas phase protein sequencer.

1983:

The polymerase chain reaction is invented by Kary B Mullis. The first artificial chromosome is synthesized, and the first genetic markers for specific inherited diseases are found.

1984:

Chiron Corp. announces the first cloning and sequencing of the entire human immunodeficiency virus (HIV) genome. Alec Jeffreys introduces technique for DNA fingerprinting to identify individuals. The first genetically engineered vaccine is developed.
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