Tag: sound waves
Tractor Beam: 3D Gadget Can Pull An Object Using Sound Waves
A team of scientists from the University of Bristol has devised a new plastic tractor-beam device. This acoustic tractor beam can pull tiny objects, like beads...
![This illustration shows the percentage of marine animals that went extinct at the end of the Permian era by latitude, from the model (black line) and from the fossil record (blue dots). A greater percentage of marine animals survived in the tropics than at the poles. The color of the water shows the temperature change, with red being most severe warming and yellow less warming. At the top is the supercontinent Pangaea, with massive volcanic eruptions emitting carbon dioxide. The images below the line represent some of the 96 percent of marine species that died during the event. [Includes fossil drawings by Ernst Haeckel/Wikimedia; Blue crab photo by Wendy Kaveney/Flickr; Atlantic cod photo by Hans-Petter Fjeld/Wikimedia; Chambered nautilus photo by John White/CalPhotos.]Justin Penn and Curtis Deutsch/University of Washington](https://www.techexplorist.com/wp-content/uploads/2018/12/marine-animals-324x160.jpg "Global warming wiped out 95% of marine life 252 million years ago")
