A New Battery-Free System Gives Devices an 'Infinite Lifetime'

https://interestingengineering.com/a-new-battery-free-system-gives-devices-an-infinite-lifetime

"BFree system allows devices to run perpetually using intermittent energy. When power is interrupted, the system pauses calculations. Then, when power returns, it resumes automatically without having lost any memory and without having to run through an extensive list of operations... novice programmer will learn about energy, energy harvesting, and the energy costs of a program they write"