科学与环境

Wood beneath German lake may reveal buildings 3,000 years older than region's first farms

来源: Phys.org - latest science and technology news stories · 发布于

Wood beneath German lake may reveal buildings 3,000 years older than region's first farms
来源: Phys.org - latest science and technology news stories

Underwater archaeological investigations have been taking place in Lake Arendsee (Altmarkkreis Salzwedel) for several years. The discovery of Neolithic fish weirs, a high medieval barge (flat-bottomed cargo ship) and a late medieval dugout canoe attracted considerable attention.

Underwater archaeological investigations have been taking place in Lake Arendsee (Altmarkkreis Salzwedel) for several years. The discovery of Neolithic fish weirs, a high medieval barge (flat-bottomed cargo ship) and a late medieval dugout canoe attracted considerable attention.

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Mysterious oarfish's fins inspire large underwater robot design
科学与环境

Mysterious oarfish's fins inspire large underwater robot design

When designing a large underwater robot that could swim silently to avoid startling sea creatures, roboticist Rob Shepherd considered the unusual swimming system of oarfish, the meters-long fish whose ribbon-like dorsal fin moves in waves to propel its body.

Phys.org - latest science and technology news stories ·

How sea squirts perceive underwater noise
科学与环境

How sea squirts perceive underwater noise

Shipping, construction work and other human activities are altering the acoustic conditions in our planet's seas. Sound pressure is often examined to determine the effects that this underwater noise has on marine organisms. However, these observations may not be thorough enough f

Phys.org - latest science and technology news stories ·

Short on time? It could be good for you
科学与环境

Short on time? It could be good for you

When it comes to mental health, it may not be how much time you have that matters, but rather how you feel about the time you have. That's one key takeaway of a new University of Colorado Boulder study examining the relationship between time and mental health.

Phys.org - latest science and technology news stories ·