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A diver viewed from below who appears inside of Snell's window. Snell's window (also called Snell's circle [1] or optical man-hole [2]) is a phenomenon by which an underwater viewer sees everything above the surface through a cone of light of width of about 96 degrees. [3] This phenomenon is caused by refraction of light entering water, and is ...
English: Snell's window as seen through an underwater tunnel at the St. Louis Zoo. Caustics in the water are visible near the sun. The black line through the frame is a gasket between segments of the tunnel.
Nhất Linh. Nguyễn Tường Tam (Vietnamese pronunciation: [ŋwiən˦ˀ˥ tɨəŋ˨˩ taːm˧˧]; chữ Hán: 阮祥三 or 阮祥叄; Cẩm Giàng, Hải Dương 25 July 1906 – Saigon, 7 July 1963) better known by his pen-name Nhất Linh ([ɲət̚˧˦ lïŋ˧˧], 一灵, "One Spirit") was a Vietnamese writer, editor and publisher in colonial Hanoi. [1]
Map of ancient Asia shows location of the Âu Việt state of Nam Cương and other Viet’s kingdoms. According to folklore, prior to Chinese domination of northern and north-central Vietnam, the region was ruled by a series of kingdoms called Văn Lang with a hierarchical government, headed by Lạc Kings ( Hùng Kings ), who were served by ...
Liang published Phan's 1905 work Việt Nam vong quốc sử (History of the Loss of Vietnam) and intended to distribute it in China and abroad, but also to smuggle it into Vietnam. Phan wanted to rally people to support the cause for Vietnamese independence; the work is regarded as one of the most important books in the history of Vietnam's ...
The first girl on the left is playing the flute in the painting Tố nữ. The sáo contains the musical spirit of Vietnamese countryside and its four peaceful seasons. In Vietnam, the people played sáo when resting on the fields or before going to sleep at night.
[5] [6] The rebellion of Đinh Điền and Nguyễn Bặc was quickly put down by Lê Hoàn but in the north, the Song dynasty began an invasion of Đại Cồ Việt in profiting its chaotic situation after the death of Đinh Tiên Hoàng, [6] finally Dương Vân Nga and the general Phạm Cự Lượng with the agreement from the majority of ...
Phong Nha-Kẻ Bàng (Vietnamese: Vườn quốc gia Phong Nha-Kẻ Bàng) is a national park and UNESCO World Heritage Site in the Bố Trạch and Minh Hóa districts of central Quảng Bình Province in the North Central Coast region of Vietnam, about 500 km south of Hanoi.