Engineers have run an electrical circuit using the power of tree, seemingly the first demonstration of its kind. The University of Washington researchers determined that bigleaf maples on the school's campus generate up to few hundred millivolts. (The current is not mentioned.) So they built a low-power sensing circuit that could scavenge enough juice from a tree to operate. From UWNews:
The tree-power phenomenon is different from the popular potato or lemon experiment, in which two different metals react with the food to create an electric potential difference that causes a current to flow.
"We specifically didn't want to confuse this effect with the potato effect, so we used the same metal for both electrodes," (electrical engineering professor Babak) Parviz said.
Tree power is unlikely to replace solar power for most applications, Parviz admits. But the system could provide a low-cost option for powering tree sensors that might be used to detect environmental conditions or forest fires. The electronic output could also be used to gauge a tree's health.
"It's not exactly established where these voltages come from. But there seems to be some signaling in trees, similar to what happens in the human body but with slower speed," Parviz said. "I'm interested in applying our results as a way of investigating what the tree is doing. When you go to the doctor, the first thing that they measure is your pulse. We don't really have something similar for trees."
The amazing suckers on octopus arms aren’t just for sucking. They also are used to smell and taste. To deal with all that sensory input, the vast majority of an octopus’s brain cells are in its eight arms! “It’s more efficient to put the nervous cells in the arm,” neurobiologist Binyamin Hochner, of the Hebrew […]
Magdalena Cerdá and Garen Wintemute are epidemiological researchers with US Davis’s Violence Prevention Research Program; when they witnessed the Trump administration’s mass-deletion of publicly funded EPA research, they feared gun violence stats would be next.
Python is immensely popular in the data science world for the same reason it is in most other areas of computing—it has highly readable syntax and is suitable for anything from short scripts to massive web services. One of its most exciting, newest applications, however, is in machine learning. You can dive into this booming […]
Learning new skills is a great way to improve your resume and stand out from other candidates. Especially in a workforce in which many job-seekers have a wide variety of qualifications. With lifetime access to Virtual Training Company, you won’t have to choose a specific focus. You can pick up new expertise whenever you deem it […]
Instead of throwing out all the empties after your next party, why not transform them into some new DIY glassware? Cut back on waste and add some home ambiance with the Kinkajou Bottle Cutter and Candle Making Kit.The Kinkajou is designed as a clamp-on scoring blade to make precise cuts. Just slide a bottle in, tighten […]