winhugs's channel

The enigmatic Canon 1 à 2 from J. S. Bachs Musical Offering (1747), The manuscript depicts a single musical sequence that is to be played front to ...

完整影音，請從09:35開始收看。

直播時間為14:00~16:30。觀眾可以利用PC、Mac線­上收看。Android系統請直接用手機瀏覽器收看，iOS系統­請到m.youtube.com/ptslivestream專­頁收看。

Peter Scott gives a survey on the eight model geometries of 3-manifolds at UC Davis on 11/16/2010.

The Alexander "horned" sphere is topologically equivalent to a ball, but its exterior is not simply connected. The animation has been made entirely...

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A topological magic trick

Winner of the 2011 Abel Prize for mathematics John Milnor presented an historical account of work on topological and differential spheres in a spec...

Interview with Technion Distinguished Professor Dan Shechtman of the Faculty of Materials Engineering. Prof. Shechtman is the 2011 Nobel Laureate i...

from the top (400-500 feet above sea level) of the route Crystal Flame, in the Candlestick area on Thaiwand Wall, in Railay, Thailand.

2min11 is my personal best.

If we watch the video in detail, we can find that at 2min10.735sec the two parts have been separated completely.

本短片值得注意的地方在，「解題者」罕有地造出突破30秒大關的­七連環下環動作。因此雖然2:15距離個人最佳(PB)有接近四­秒。但仍將之上載給有興趣的人士分享箇中樂趣。

There is something special, worth mentioning here. The problem s...

雖然2分13秒並下是個人最佳時間，但值得一提的是在解開首七個­連環時做出的時間--28.7秒，比較突出，因為若以保持此高速­度到尾的話，解開九連環就祇需要大約116秒就能完成的。

Artificial intelligence.

Note: This was *not* edited, it was done with a program I wrote for a programming class project.

Video feedback is a well-known phenomenon. If you hook a camera up to a TV and then point it at the TV, you get an infinite regression of images. ...