ធ្វើឱ្យគណនីឥតគិតថ្លៃរបស់អ្នក!
បណ្ណាល័យភាពយន្តនិងវីដេអូរបស់យើងអាចត្រូវបានមើលឬទាញយកដោយសមាជិកតែប៉ុណ្ណោះ
បន្តមើលដោយឥតគិតថ្លៃ➞ចំណាយពេលតិចជាង ១ នាទីដើម្បីចុះឈ្មោះបន្ទាប់មកអ្នកអាចរីករាយនឹងចំណងជើងភាពយន្តនិងទូរទស្សន៍គ្មានដែនកំណត់។
Coast
The Sea Eagles of the island of Canna were hunted to extinction, but now they have been brought back. We climb into one of their nests perched high on a steep cliff to find out what their chances of survival are. Neil Oliver visits Europe's biggest super-quarry to receive an explosive lesson in how the rock is mined. Armed with a simple ruler on a Scottish beach, Nick Crane learns how the challenge of measuring our coastline led to a new branch of maths that could help our mobile phones get smaller.
ពេលរត់: 60:14 នាទី
គុណភាព: HD
កាលបរិច្ឆេទខ្យល់ដំបូង: Jul 22, 2005
កាលបរិច្ឆេទអាកាសចុងក្រោយ: Nov 09, 2016
ភាគ: 84 ភាគ
រដូវ: 11 រដូវ
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