My bone measurements(in cm) :
Humerus- 28.0
Radius- 24.0
Femur- 52.0
Tibia- 32.0
Theoretical height(in cm) :
Humerus- 151.7
Radius- 164.6
Femur- 179.0
Tibia- 154.7
Simon's measurements(in cm) :
Humerus- 27.0
Radius- 22.0
Femur- 40.0
Tibia- 35.0
Theoretical height(in cm) :
Humerus- 148.4
Radius- 157.9
Femur- 156.5
Tibia- 161.8
Reasons for discrepancies
1. Some people have a longer specific body part, thus, it is difficult to accurately measure his/her height.
2. The measuring tape might be faulty.
My golden ratio is 1.64 corrected to 3 sf. ( Φ Golden Ratio= 1.618 033 988 7...)
The case of the middle aged woman
Annie told Sherlock Holmes that she saw "a shadow" and was sure that it was the grizzly bear. However, the shadows of a human being and a bear are different and Annie was able to differentiate that Bill's shadow was not of a grizzly bear. Thus, Holmes was sure that Annie murdered Bill.
Friday, September 30, 2011
Monday, September 26, 2011
Activity 2- Avatar making and description writing
My Avatar-
Steve Jobs has bald hair and wears spectacles. He has a curve chin and small eyes.
Steve Jobs-
Steve Jobs has bald hair and wears spectacles. He has a curve chin and small eyes.
Tuesday, September 20, 2011
Activity 1- Lefty Lewis
1. Evidence that may have been left at the scene of the crime.
-his blood stains that contained his dna
-fingerprints
-torch that had fallen out
-Car's leaking oil that showed his route
-tyre tracks that showed the path
-his car being chipped by the gate
2. Evidence that might have been taken away by Lefty
-paint of the gate when it was chipped by his car
-the lost jewellery
-soil on his shoes
3. Suggestions for the forensic scientist
Lefty is the thief as there are many evidences such as fingerprints that were found in the mayor's house and the blood stains that contained his dna, proving that he was present when the incident happened.
-his blood stains that contained his dna
-fingerprints
-torch that had fallen out
-Car's leaking oil that showed his route
-tyre tracks that showed the path
-his car being chipped by the gate
2. Evidence that might have been taken away by Lefty
-paint of the gate when it was chipped by his car
-the lost jewellery
-soil on his shoes
3. Suggestions for the forensic scientist
Lefty is the thief as there are many evidences such as fingerprints that were found in the mayor's house and the blood stains that contained his dna, proving that he was present when the incident happened.
Thursday, September 15, 2011
Summer Arctic melt among worst ever
"Depending on whom you ask, this year’s annual minimum of Arctic sea ice either broke or came close to breaking the record set in 2007. And that’s without the unusual weather conditions that conspired to melt so much ice that historic year.
Increased melting of the Arctic Ocean’s frozen lid in the last few decades underscores a changing northern reality, scientists say — that summer sea ice is on a downward spiral. “The bigger picture here is this is continuing the long-term decline in sea ice cover,” says Mark Serreze, director of the National Snow and Ice Data Center in Boulder, Colo.
Arctic sea ice melts back in the summer and re-freezes each winter, on average a little less each year in recent decades due in part to warming temperatures.
On September 9, University of Bremen researchers announced that the sea ice had bottomed out the previous day at 4.240 million square kilometers, breaking its 2007 record low of 4.267 million square kilometers. But another group that uses the same data, from a microwave instrument on board the Aqua satellite, puts 2011 in second place, at least as of September 14.
That estimate, which comes from the Japan Aerospace Exploration Agency, working with the International Arctic Research Center at the University of Alaska Fairbanks, uses a different algorithm and hence gets slightly different results, says Walt Meier of NSIDC. The discrepancy may stem in part from the Bremen group’s ability to capture more fine-scale details such as small open-water areas atop the ice, of which there were plenty this year.
For its part, the NSIDC uses a different microwave instrument aboard a defense meteorological satellite to study ice cover. On September 13 the center announced that Arctic ice was near its record low: 4.34 million square kilometers on September 10, compared with the 2007 minimum of 4.17 million square kilometers (by its calculations).
“We are sitting at number two and I think we’re going to continue to sit at number two,” Serreze says, noting that summer’s end is already bringing cooler temperatures to the Arctic. The NSIDC doesn’t release final numbers until after the sea-ice skin has grown for several days.
To reach the historic 2007 minimum, high pressure over the Beaufort Sea and low pressure over northeastern Siberia pumped a lot of heat into the Arctic while persistent winds from the south melted and packed the ice together. This year, conditions were neither particularly favorable nor unfavorable for ice loss, Serreze says; instead, the loss might trace back partly to ice conditions this spring. “The spring ice cover is just so thin now that it can’t take a hit,” he says.
My Reflections
I feel that if nothing is done to stop global warming, we could possibly in a water-filled country in 50 years time. Despite efforts to prevent global warming over the past few years, the melting of the ice is still not dropping. This shows that we have to put in more effort into conservation of resources and less pollution.
Increased melting of the Arctic Ocean’s frozen lid in the last few decades underscores a changing northern reality, scientists say — that summer sea ice is on a downward spiral. “The bigger picture here is this is continuing the long-term decline in sea ice cover,” says Mark Serreze, director of the National Snow and Ice Data Center in Boulder, Colo.
Arctic sea ice melts back in the summer and re-freezes each winter, on average a little less each year in recent decades due in part to warming temperatures.
On September 9, University of Bremen researchers announced that the sea ice had bottomed out the previous day at 4.240 million square kilometers, breaking its 2007 record low of 4.267 million square kilometers. But another group that uses the same data, from a microwave instrument on board the Aqua satellite, puts 2011 in second place, at least as of September 14.
That estimate, which comes from the Japan Aerospace Exploration Agency, working with the International Arctic Research Center at the University of Alaska Fairbanks, uses a different algorithm and hence gets slightly different results, says Walt Meier of NSIDC. The discrepancy may stem in part from the Bremen group’s ability to capture more fine-scale details such as small open-water areas atop the ice, of which there were plenty this year.
For its part, the NSIDC uses a different microwave instrument aboard a defense meteorological satellite to study ice cover. On September 13 the center announced that Arctic ice was near its record low: 4.34 million square kilometers on September 10, compared with the 2007 minimum of 4.17 million square kilometers (by its calculations).
“We are sitting at number two and I think we’re going to continue to sit at number two,” Serreze says, noting that summer’s end is already bringing cooler temperatures to the Arctic. The NSIDC doesn’t release final numbers until after the sea-ice skin has grown for several days.
To reach the historic 2007 minimum, high pressure over the Beaufort Sea and low pressure over northeastern Siberia pumped a lot of heat into the Arctic while persistent winds from the south melted and packed the ice together. This year, conditions were neither particularly favorable nor unfavorable for ice loss, Serreze says; instead, the loss might trace back partly to ice conditions this spring. “The spring ice cover is just so thin now that it can’t take a hit,” he says.
My Reflections
I feel that if nothing is done to stop global warming, we could possibly in a water-filled country in 50 years time. Despite efforts to prevent global warming over the past few years, the melting of the ice is still not dropping. This shows that we have to put in more effort into conservation of resources and less pollution.
Tuesday, September 13, 2011
Genetically Modified Glowing Beagle
Tegon is her name and glowing is her game. Tegon is not the only animal that has been genetically modified to glow; she joins a red fluorescent puppy named Ruppy and Mr. Green Genes the cat. Tegon is a beagle and was created by Byeong Chun Lee, the director of the Seoul National University Hospital for Animals in Korea, and his colleagues in 2009. Lee told Discovery news, “The entire body of the dog glows. One can witness a slightly yellower change in the color of the dog’s skin, but to the naked eye, fluorescence cannot be seen without the presence of UV light and goggles.”
There was a five step process that had to happen in order to produce Tegon:
The first step was to insert a piece of DNA that controls the way a green fluorescent gene is expressed into dog cells. After modifying the dog cells they injected them into the DNA of an immature female reproductive cell before it’s fertilization. Step three consisted of producing an embryo using a technique called Somatic Cell Nuclear Transfer. This embryo was implanted into a mother beagle. Tegon was born 60 days later with the ability to glow under UV light when given a certain antibiotic called doxycycline. The study started in 2009, but the details of the study was just released last month. Now Tegon is grown and with pups of her own. It hasn’t been made clear whether her pups inherited her glowing talents.
Reflections
My first reaction to this article was "Wow its impossible, how is a dog able to glow?". However, i was won over and i am impressed by the improvements of genetically modified things. I certainly hope that other animals can also be genetically modified to glow as it would be fun to see them glow in the dark. Wouldnt it be cool if humans could glow too?
There was a five step process that had to happen in order to produce Tegon:
The first step was to insert a piece of DNA that controls the way a green fluorescent gene is expressed into dog cells. After modifying the dog cells they injected them into the DNA of an immature female reproductive cell before it’s fertilization. Step three consisted of producing an embryo using a technique called Somatic Cell Nuclear Transfer. This embryo was implanted into a mother beagle. Tegon was born 60 days later with the ability to glow under UV light when given a certain antibiotic called doxycycline. The study started in 2009, but the details of the study was just released last month. Now Tegon is grown and with pups of her own. It hasn’t been made clear whether her pups inherited her glowing talents.
My first reaction to this article was "Wow its impossible, how is a dog able to glow?". However, i was won over and i am impressed by the improvements of genetically modified things. I certainly hope that other animals can also be genetically modified to glow as it would be fun to see them glow in the dark. Wouldnt it be cool if humans could glow too?
"Diamond Planet"
Australian astronomers have recently discovered a diamond planet in space on Thursday August, 25th. Before it became a diamond planet it was known as a White Dwarf. The Diamond planet was created by radio waves coming off the planet’s sun, a rare spinning neutron star named PSR J1719-1438. R
Researchers reported in Science that the radio waves were let of by PSR J1719-1438 a little over every two hours and it only sent one wave at a time. These waves ate away at the planet’s surface until it was one big diamond. Matthew Bailes at the Swinburne University of Technology in Melbourne says that,”the evolutionary history and amazing density of the planet all suggest it is comprised of carbon,” and a little oxygen. With the strong pull of gravity the carbon crystallizes making the planet one big diamond.
The mega huge diamond is about half the size of Jupiter with the same mass, but it’s density is twenty times more than Jupiter. It’s diameter has been measured to be approximately 34,175 miles. The over-sized gem is located in the Serpens constellation, which is, from our solar system, only an eighth of the way toward the middle of the Milky Way.
Most spinning pulsars that spin at a rate faster than once every twenty milliseconds are part of a binary star system and usually only thirty percent of them are companied by other stars or planets. This specific discovery is so rare because there is only one other existing spinning pulsar with an companion the size of a planet.
Reflections
I feel that this discovery is important the field of Astronomy. Being a fan of astronomy, this planet is a huge breakthrough as this planet is rare, with only one other existing pulsar with a companion the size of a planet. I feel that the planet is beautiful too, as the "diamond planet" is made up of crystallized carbon that makes it shiny like a diamond.
Researchers reported in Science that the radio waves were let of by PSR J1719-1438 a little over every two hours and it only sent one wave at a time. These waves ate away at the planet’s surface until it was one big diamond. Matthew Bailes at the Swinburne University of Technology in Melbourne says that,”the evolutionary history and amazing density of the planet all suggest it is comprised of carbon,” and a little oxygen. With the strong pull of gravity the carbon crystallizes making the planet one big diamond.
The mega huge diamond is about half the size of Jupiter with the same mass, but it’s density is twenty times more than Jupiter. It’s diameter has been measured to be approximately 34,175 miles. The over-sized gem is located in the Serpens constellation, which is, from our solar system, only an eighth of the way toward the middle of the Milky Way.
Most spinning pulsars that spin at a rate faster than once every twenty milliseconds are part of a binary star system and usually only thirty percent of them are companied by other stars or planets. This specific discovery is so rare because there is only one other existing spinning pulsar with an companion the size of a planet.
Reflections
I feel that this discovery is important the field of Astronomy. Being a fan of astronomy, this planet is a huge breakthrough as this planet is rare, with only one other existing pulsar with a companion the size of a planet. I feel that the planet is beautiful too, as the "diamond planet" is made up of crystallized carbon that makes it shiny like a diamond.
Sunday, September 11, 2011
Saturn
Saturn is the six planet from the Sun. It is name after the Roman Gad Saturn. Its astronomical symbol represents the Roman's God sickle.
Fun Facts:
1. Saturn is a gas giant, along with Jupiter, Uranus and Neptune.
2. Saturn has rings surrounding it.
3. Wind speeds on Saturn can reach 1800km/h.
4. It takes Saturn 29.5 years to revolve around the Sun.
Fun Facts:
1. Saturn is a gas giant, along with Jupiter, Uranus and Neptune.
2. Saturn has rings surrounding it.
3. Wind speeds on Saturn can reach 1800km/h.
4. It takes Saturn 29.5 years to revolve around the Sun.
Saturday, September 10, 2011
Reflection on Term 3 science
I feel that science in term 3 was fun and enriching. Although i did not do well for my tests, i hope to be able to do well for my term 4 science. I look forward to learning dna analysis next term.
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