Light which enters the magnifying glass are focus at a point . The focused sunlight which comes out of the magnifying glass have high energy. Thus, if the focused sunlight ray is pointed at the tip of the matchstick which contains phosphorus sesquisulfide as the active ingredient and gelatin as a binder, the match head would light up without the use of friction. This is due to the intense heat focused at one point .
Showing posts with label yongsheng. Show all posts
Showing posts with label yongsheng. Show all posts
Monday, July 19, 2010
How does a matchstick light up with a magnifying glass
Light which enters the magnifying glass are focus at a point . The focused sunlight which comes out of the magnifying glass have high energy. Thus, if the focused sunlight ray is pointed at the tip of the matchstick which contains phosphorus sesquisulfide as the active ingredient and gelatin as a binder, the match head would light up without the use of friction. This is due to the intense heat focused at one point .
Tuesday, April 20, 2010
Networking project for Science Chemistry(:
Question : Reports have linked charred food to cancer. How safe is BBQ food ?
Charred food is said to be harmful to us human beings. This is definitely true as research has already been done. It is said that the reason why charred food causes cancer to us is because of one particles called Benz pyrenes. Scientist have found out that large intake of Benz pyrenes will cause cancer after some research and experiments. This fact is exaggerated by other people saying that grilled food will cause cancer thus, causing people to be in fear and dared not to consume grilled or BBQ food. So in short, BBQ food is safe to consume, only charred food is dangerous as it will cause cancerous cell to develop.
Thursday, April 15, 2010
E-Learning Assignment Part 3 for register number 31-39
1. Male seahorses get pregnant! Is this true? How?
It is true that male seahorse gets pregnant. During mating, the female seahorse insert eggs into the males' pouch where the male will then fertilize it. The male seahorse will then carry the eggs until they are fully developed and the baby seahorse will then come out.
It is true that male seahorse gets pregnant. During mating, the female seahorse insert eggs into the males' pouch where the male will then fertilize it. The male seahorse will then carry the eggs until they are fully developed and the baby seahorse will then come out.
2. Sound travels 15 times faster through steel than through the air.Why?
It is due to the compressibility and density of the medium. The molecules of solids are packed together closely. Sounds are created through vibrations. If the molecules in solids are packed together closely, the sound vibrations transfer faster in solids because the molecules are packed together closely. Air molecules are far apart, thus, the vibrations transfer slower through air.
3. Infants blink only once or twice a minute while adults average around 10. Why do we blink so many times? What is the purpose of blinking?!
Blinking is caused by fatigue, eye injury, medication and disease. It is also the function that spreads tears across our eyes to get rid of irritants. The reason why infants blink more than adults is because that they have smaller eyes and they have more sufficient sleep than adults. Also, infants cannot produce tears in the first month when they are born.
4. French kissing involves all 34 muscles in the face. Really? Which 34 muscles on the face? Show me a diagram and explain how it works!
It involves the lips and the cheeks. It also involves the tongue because french kiss is a kiss which they "merge" two souls together.
Wednesday, April 14, 2010
E-Learning Assignment Part 2 for register number 31-39
The design of the dam turned out to be a failure because there are no support for the dam, as it is a vertical straight wall. Thus, the energy of the currents will easily break the lower part of the dam as the lower part has more energy. The design for my dam is much better as the lower part of the dam is thicker, thus the dam will be able to hold on the energy of the water.
Tuesday, April 13, 2010
ANTI GRAVITY PLATFORM
This is a recent invention i have found out in the internet. It is an anti gravity platform that can hover nick-naks such as action figures, engagement rings or toy cars. This anti gravity platform can literally make things float on top of it as if it is 0 gravity. It is said that the scientific concept behind this is very strong magnets below the platform so most probably the platform can only float materials that are metals. This is very fascinating as it is related to 0 gravity. Being in space is probably the dream of many people. Just imagining that we can float on Earth and not have to go to the moon, just makes us look forward to this invention.
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