Underwater, where light is scarce, electrical signals offer ways to communicate, navigate, find, and sometimes stun prey. But how do these fish produce electricity? And why? Eleanor Nelsen illuminates the science behind electric fish. 接近 350 种的鱼有专门的解剖组织来产生并探测电信号。在水下,...
Q: How do animals communicate underwater?(Science 101: Background boosters for elementary teachers)Robertson, Bill
Scientists have discovered new insights into baleen whales’ anatomy that may also make them vulnerable to human noise pollution.
The Uniform Code of Military Justice specifies court-martial for any officer who sends a soldier into battle without a weapon. There ought to be a similar protection for students because students shouldn't go out into life without the ability to communicate. That's becauseyour success in life ...
Fish can also create sounds underwater by using hydrodynamics, or the water itself. When spawning, parrotfish move so quickly back and forth through the water that they generate a turbulent noise. They are literally swishing through the water. They can basically go from a standing start to 40...
Unemployed, Underwater, and Sinking This guest post is contributed by Mark Paul and Anastasia Wilson. Both are members of the class of 2011 at the University of Massachusetts-Amherst. In some cultures asking how the kids are doing is a colloquial way of asking how the individual is faring, ...
Coco Cay is my favorite island among all private islands in the Caribbean. There is something for everyone, even underwater music speakers and chaise lounges inside the largest freshwater pool in the Caribbean. There were swings in another bar, adding a touch of whimsy to the upscale and rela...
Vendors soon began developing proprietary technology to take advantage of the newly available bandwidth, but it took them a while to realize they needed to work together. There wasn't much point in the whole thing if one type of equipment couldn't communicate with another type. In 1988 a ...
Light doesn't travel well underwater—even in clear waters, you can see perhaps some tens of meters. Sound, however,travels very welland far underwater. This is because water is much denser than air, and socan respond fasterand better toacoustic pressure waves—sound waves. ...
eating or drinking for a certain period before surgery, as well as provide specific instructions regarding medications, such as which ones to take or avoid. It is important to communicate openly with your healthcare provider about any concerns or questions you may have leading up to the surgery...