Focusing sound waves from the environment - Physics Forums
Mar 18, 2025 · I've heard about Schumann resonance in the atmosphere and I was wondering if I could capture or concentrate those sound waves on an energy harvesting system via …
Harvesting energy from the earth rotation - Physics Forums
Dec 10, 2011 · But the Earth has been losing energy to the Moon, through tides, for billions of years. So [unfortunately] overall it is the Moon that is harvesting energy from the Earth's …
Gravity Based Electricity Generator - Physics Forums
May 5, 2024 · TL;DR Summary I am designing a gravity-based electricity generator using a 500 kg mass and exploring various mechanical configurations to convert gravitational energy into …
Can I store electricity from a wind turbine directly into a battery?
Aug 12, 2019 · The 'roadside energy harvesting' idea was still very sketchy but I needed to clarify the fundamentals of the battery storage first. And that was the idea about the post.
Noticed something in a clockwatch - Physics Forums
5 days ago · Greetings All: Looking into few clockwatch adds and noticed that some of the mechanical clockwatches (handwatchs) are able to be charged (rewind a spring) by...
Is Matter/Energy Eternal? Mechanisms for an Endless Universe?
May 27, 2015 · I was listening to Lawrence Krauss. I quote roughly what he said, 'Our universe had a beginning. But it is not required, though. It could well have been eternal.' My question is, …
Convert MeV to V: How? - Physics Forums
May 17, 2005 · Hello- is it possible to convert MeV to V? If so, how is it done? For example if a particle is emmitted with an energy of 4.19MeV- how can this be changed into V? Any help is …
Net charge of the surface of the earth - Physics Forums
Sep 17, 2014 · If we draw any power we have to wait for the local dielectric to recover before we can harvest more power. The very act of harvesting energy from the atmosphere changes the …
How much wind force does a moving vehicle generate?
Aug 15, 2016 · Does anyone know how to calculate how much force (or wind) a moving vehicle generate? I am trying to figure out how much wind does a moving car (or any vehicle) …
Electric Potential Energy of Point Charge Systems - Physics Forums
Mar 2, 2025 · Here is my line of thinking: I know A and B aren't correct since the work done would be negative since the electric force and displacement are in opposite directions. When …