Engineering
For millions of people who participate in activities such as snorkeling and scuba diving each year, hand signals are the only option for communicating safety and directional information underwater. While recreational divers ...
Aug 29, 2022
0
210
Energy & Green Tech
It doesn't come on fast. It may take weeks to notice. You have the newly recharged lithium-ion AA batteries in the wireless kitty water fountain, and they last two days. They once lasted a week or more. Another round of charging, ...
Apr 28, 2022
0
192
Energy & Green Tech
Scientist have developed a lithium ion battery that charges at an elevated temperature to increase reaction rate but keeps the cell cool during discharge, showing the potential to add 200 miles of driving range to an electric ...
Oct 30, 2019
13
9755
Robotics
A team of researchers with members from the U.S., China and Sweden has developed a new kind of foot landing structure for drones to allow them to perch on nearby structures. In their paper published in the journal Science ...
Energy & Green Tech
Metal-air batteries are one of the lightest and most compact types of batteries available, but they can have a major limitation: When not in use, they degrade quickly, as corrosion eats away at their metal electrodes. Now, ...
Nov 8, 2018
1
112
Engineering
Being able to both walk and take flight is typical in nature - many birds, insects, and other animals can do both. If we could program robots with similar versatility, it would open up many possibilities: Imagine machines ...
Jun 26, 2017
0
189
Energy & Green Tech
(Phys.org)—Instant crowd pleaser: Any headline that promises more battery life for smartphones. And why wouldn't it be a crowd-pleaser, considering the hassles in running out of juice when you need it the most?
Engineering
An improved charging protocol might help lithium-ion batteries to last much longer. Charging with a high-frequency pulsed current reduces aging effects, an international team demonstrated. The study was led by Philipp Adelhelm ...
Apr 9, 2024
0
38
Energy & Green Tech
High-performance batteries are required for a wide range of applications, and demand for them is growing rapidly. This is why the research and development of electrochemical energy storage systems, including those for electromobility, ...
Jan 26, 2024
0
41
Consumer & Gadgets
University of Sussex researchers have developed a more energy-efficient alternative to transmit data that could potentially replace Bluetooth in mobile phones and other tech devices. With more and more of us owning smartphones ...
Nov 21, 2023
0
128
In electronics, a battery or voltaic cell is a combination of many electrochemical Galvanic cells of identical type to store chemical energy and to deliver higher voltage or higher current than with single cells.
The battery cells create a voltage difference between the terminals of each cell and hence to its combination in battery. When an external electrical circuit is connected to the battery, then the battery drives electrons through the circuit and electrical work is done. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications, and is now a multi-billion dollar industry.
This text uses material from Wikipedia, licensed under CC BY-SA
