This amazing Apod photo of the day may give some people the impression that the sun is going out of control. However, the photo was taken on March 30th by the Solar Dynamics Observatory. This photo of the sun is a depiction of the flase-colored sun is the composite view that covers the extreme ultraviolet wavelengths that traces the hot plasma at temperature that reach 1 million Kelvin. The SDO will send about 1.5 terabytes of data back to each each day. the recent data released includes a high-reslution movie of the large and eruptive provinces that are quite apparent along the solar limb at the upper left of the photo. This also photo shows the sun in a discolored version is an extremely interesting way to examine details of the sun that you may have missed once before.
http://apod.nasa.gov/apod/image/1004/SunSDOfulldisk.jpg
Sunday, April 25, 2010
Karl Jansky
Sheila Heiman
Karl Guthe Janky was born in Norman, Oklahoma on October 22nd, 1905. He was raised by this Dad, Cyril M. Janky who was the Dean of the College of Engineering at the University of Oklahoma at Norman. Dean was an extremely intelligent at a very young age. He was an engineer with interests in physics that was passed on to Karl. Karl Jansky was named in respects to Dr. Karl Guthe, a person that was an amazing mentor to Cyril M. Jansky. Nee Nellie Moreau was the mother of Karl Jansky, and Cyril Jansky Jr., the brother of Karl was ten years older then his brother. He too was exceptionally bright man. He was a major contributor to building some of the earliest radio transmitters in the country. Karl Jansky attended the University of Wisconsin-Madison where he received his BS in physics in 1927.
In 1928, Karl joined the Bell Telephone Laboratories in Holmdel, New Jersey. The investigation of the atmospheric and ionosphere properties using “short waves” for the use in transatlantic radiotelephone services. Jansky acted as a radio engineer. His job was to investigate source of static that possibly interfered with the radio voice transmission. At the Bell Telephone Laboratories, Jansky built an Atenna that received radio waves at a frequency of 20.5 Mhz. The antenna was mounted on a turntable that allowed it to rotate in any direction, which is the source of its earned nickname: “Jansky’s Merry-go-round.” The rotating of the antenna allowed one to find what direction was any radio single coming from.
Janksy worked on recording singles from all directions for several months. His work caused him to identify about three different types of static. The static he identified was: nearby thunderstorms, distant thunderstorms, and faint steady hiss of unknown origins. The rise and fall of the radiation he was detecting for the third type of static lead Jansky to believe that the radiation was from the sun for about a year. Eventually, Jansky learned that the radiation source was from the Milky Way and was strongest in the direction that originated at the center of the galaxy in the constellation of Sagittarius.
On May 5th, 1922 the discovery that Jansky made about the radiation waves were published in the New York Times. Jansky decided that a follow up on this discovery was necessary, and he investigated the radio waves in more explicate detail. Jansky recommend to Bell Labs that the construction of a 100 foot diameter dish antenna was of vital importance. However, Bell Labs believed that the antenna was not necessary. He claimed that the static was not a problem for transatlantic radio communication. Jansky was then assigned to another project which required no more radio astronomy. Many scientists were interested in this discovery, but no one followed up on their own research due to the fact that the great depression was caused major financial hardships.
It was not until 1933 that two men who researched on Jansky, developed a new study of radio astronomy. Grote Rever and John Krause both were a great influence in the recent day radio astronomy research.
Jansky made many publications from the year 1932 to the year 1937. For example, 1932: "Directional studies of atmospherics at high frequencies", and 1933: "Electrical disturbances apparently of extraterrestrial origin.” Jansky also left a legacy behind him, and in honor of this amazing man, the unit that is used by radio astronomers for the strength of radio sources is the jansky. The crater Jansky on the moon is also named on his behalf. The Karl Jansky is also a NRAO postdoctoral fellowship program. A replica of the original rotating telescope was created on the NRAP site in Green Bank, West Virginia. Jansky noise is the high frequency static disturbance of the cosmic origin that has also been named in his honor. Karl Janskys life was cut short at the age of 44 from a heart condition. His life may have been shirt, but the advancements he made in radio astronomy has left a huge impact on the world forever.
Works Cited
"Karl Jansky | This Day In Tech | Wired.com." Wired News. Web.
25 Apr. 2010.
"Karl Jansky." NNDB: Tracking the Entire World. Web. 25 Apr.
2010.
Sullivan, Woodruff Turner. The Early Years of Radio Astronomy:
Reflections Fifty Years after Jansky's Discovery. Cambridge
[Cambridgeshire: Cambridge UP, 1984. Print.
Karl Guthe Janky was born in Norman, Oklahoma on October 22nd, 1905. He was raised by this Dad, Cyril M. Janky who was the Dean of the College of Engineering at the University of Oklahoma at Norman. Dean was an extremely intelligent at a very young age. He was an engineer with interests in physics that was passed on to Karl. Karl Jansky was named in respects to Dr. Karl Guthe, a person that was an amazing mentor to Cyril M. Jansky. Nee Nellie Moreau was the mother of Karl Jansky, and Cyril Jansky Jr., the brother of Karl was ten years older then his brother. He too was exceptionally bright man. He was a major contributor to building some of the earliest radio transmitters in the country. Karl Jansky attended the University of Wisconsin-Madison where he received his BS in physics in 1927.
In 1928, Karl joined the Bell Telephone Laboratories in Holmdel, New Jersey. The investigation of the atmospheric and ionosphere properties using “short waves” for the use in transatlantic radiotelephone services. Jansky acted as a radio engineer. His job was to investigate source of static that possibly interfered with the radio voice transmission. At the Bell Telephone Laboratories, Jansky built an Atenna that received radio waves at a frequency of 20.5 Mhz. The antenna was mounted on a turntable that allowed it to rotate in any direction, which is the source of its earned nickname: “Jansky’s Merry-go-round.” The rotating of the antenna allowed one to find what direction was any radio single coming from.
Janksy worked on recording singles from all directions for several months. His work caused him to identify about three different types of static. The static he identified was: nearby thunderstorms, distant thunderstorms, and faint steady hiss of unknown origins. The rise and fall of the radiation he was detecting for the third type of static lead Jansky to believe that the radiation was from the sun for about a year. Eventually, Jansky learned that the radiation source was from the Milky Way and was strongest in the direction that originated at the center of the galaxy in the constellation of Sagittarius.
On May 5th, 1922 the discovery that Jansky made about the radiation waves were published in the New York Times. Jansky decided that a follow up on this discovery was necessary, and he investigated the radio waves in more explicate detail. Jansky recommend to Bell Labs that the construction of a 100 foot diameter dish antenna was of vital importance. However, Bell Labs believed that the antenna was not necessary. He claimed that the static was not a problem for transatlantic radio communication. Jansky was then assigned to another project which required no more radio astronomy. Many scientists were interested in this discovery, but no one followed up on their own research due to the fact that the great depression was caused major financial hardships.
It was not until 1933 that two men who researched on Jansky, developed a new study of radio astronomy. Grote Rever and John Krause both were a great influence in the recent day radio astronomy research.
Jansky made many publications from the year 1932 to the year 1937. For example, 1932: "Directional studies of atmospherics at high frequencies", and 1933: "Electrical disturbances apparently of extraterrestrial origin.” Jansky also left a legacy behind him, and in honor of this amazing man, the unit that is used by radio astronomers for the strength of radio sources is the jansky. The crater Jansky on the moon is also named on his behalf. The Karl Jansky is also a NRAO postdoctoral fellowship program. A replica of the original rotating telescope was created on the NRAP site in Green Bank, West Virginia. Jansky noise is the high frequency static disturbance of the cosmic origin that has also been named in his honor. Karl Janskys life was cut short at the age of 44 from a heart condition. His life may have been shirt, but the advancements he made in radio astronomy has left a huge impact on the world forever.
Works Cited
"Karl Jansky | This Day In Tech | Wired.com." Wired News. Web.
25 Apr. 2010.
"Karl Jansky." NNDB: Tracking the Entire World. Web. 25 Apr.
2010.
Sullivan, Woodruff Turner. The Early Years of Radio Astronomy:
Reflections Fifty Years after Jansky's Discovery. Cambridge
[Cambridgeshire: Cambridge UP, 1984. Print.
Monday, April 19, 2010
Apod 4.1
This weeks Apod blog is on the photo of an oxygen tank that has exploded and has damaged the service module in the year 1970. The astronauts that were part of the the Apollo 13 were forced to leave and change the plans to make the 3rd manned lunar landing due to this event. The entire panel on the side of the module has been obviously been blown away and there is an intense internal damage that is apparent. In April 17th, 1970 the three astronauts returned safely to Earth. This is a very interesting photo, and I think it sheds a lot of light to events that happened in the past for people that were not completely aware. All in all the photo, although grainy still gives us an idea of the extensive damage done to the service module.
http://apod.nasa.gov/apod/image/1004/AS13-59-8500HR.jpg
http://apod.nasa.gov/apod/image/1004/AS13-59-8500HR.jpg
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