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Felix He
Worked at www.e-lip.cn
Lived in bei jing
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Felix He

commented on a video on YouTube.
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像司马南先生这样观点被一个个被击破,还能脸带微笑自以为很潇洒还可以调侃辩论对手“摸女同志手”的“高手”,我想说:我恶心你这种人但是支持你的言论权。
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Felix He

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Nice work
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OK,regular expression is a tool programmers use often.But it can train your pattern recognizing ability(which at least i believe is true).I found this site a nice resource for interacting with regular expression. By the way i want to yell out:interacting style is the future of the study online!
http://regexone.com/
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Have him in circles
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Felix He

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 A beautiful exprement for the start of hacker' new year.:)
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I did thought season were caused by it's distance from sun.:(
And i think knowing definition of Axial tilt and it's geometric property help understanding seasons come an go.Here is some complement information about axial tilt for who are too curious to be not satisified with this . :)
http://en.wikipedia.org/wiki/Axial_tilt
 
Turning Point

Today is Summer Solstice, which marks the beginning of Summer for those in the southern hemisphere. On this day the sun follows its highest path in the sky. Starting tomorrow the Sun will trace a lower and lower daily path until it reaches the Winter Solstice in December.  Of course most people live in the northern hemisphere, and for them today marks the Winter Solstice.  Contrary to popular belief, the seasons are not caused by our distance from the Sun. The Earth is actually closest to the Sun (at perihelion) on January 3, and farthest (at aphelion) on July 4. Although the changing distance from the Sun does have an effect on the Earth's temperature, it is tiny when compared to the variation of the Sun's path across the sky. It is our orientation relative to the sun, not our distance, which is the cause of our seasons.

The axis of the Earth is tilted about 23 degrees relative to its orbital plane. As the Earth orbits the Sun, its relative orientation changes, as seen in the figure below. At the Winter Solstice, the pole of your hemisphere is tilted slightly away from the Sun. As a result we receive less heat and light, which is why it is colder. As a result the seasons in the southern hemisphere are opposite to the seasons in the northern hemisphere, which is why Santa celebrates at the beach in Australia. 

The Winter Solstice is one of four dates marking the cycle of the Sun's daily path during the year. The Summer Solstice marks the longest day of the year, when the Sun follows its highest path in the sky, typically on June 21. Halfway between these two extremes are the Spring and Fall equinoxes, typically on March 21 and September 21. This is, of course, for the northern hemisphere. For the southern hemisphere Summer and Winter are reversed. 

Since the dawn of history, human civilizations were aware that this variation of the Sun's path could be used to predict the cycle of the seasons. When the Sun moved lower in the sky it meant Winter was coming. When the Sun began to follow a higher path in the sky, warmer days would follow. It's reliability was so strong that early civilizations made careful measurements of the cycle, and even held celebrations to mark them. 


Image:  Swinburne University of Technology (http://goo.gl/iExNZ).
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There are some videos on YouTube explaining this phenomenon better.
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Felix He

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New friend came.I have not seen any outdoor object through it.I think i got to spend more time on it.
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It is called toy factory.
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+Liz Krane In fact it was kind of an useless machine only could make sounds when you press some button as if it was makeing toys but not really. :) 
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Have him in circles
260 people
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software engineer
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  • www.e-lip.cn
    java developer, 2013
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Felix He
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Programmer, life learner ,science fan
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If A is success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut --Albert Einstein
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