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  2. Groundwater recharge - Wikipedia

    en.wikipedia.org/wiki/Groundwater_recharge

    Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is often expressed as a flux to the water table surface.

  3. Rejuvenation - Wikipedia

    en.wikipedia.org/wiki/Rejuvenation

    [5] Rejuvenation technology and its effects on individuals and society have long been a subject of science fiction. The Misspent Youth and Commonwealth Saga by Peter F. Hamilton are among the most well known examples of this, dealing with the short- and long-term effects of a near perfect 80-year-old to 20-year-old body change with mind intact.

  4. Recreation - Wikipedia

    en.wikipedia.org/wiki/Recreation

    A traditional view holds that work is supported by recreation, recreation being useful to "recharge the battery" so that work performance is improved. Work, an activity generally performed out of economic necessity and useful for society and organized within the economic framework, however can also be pleasurable and may be self-imposed thus ...

  5. Rainwater harvesting - Wikipedia

    en.wikipedia.org/wiki/Rainwater_harvesting

    configuration of domestic rainwater harvesting system in Uganda. [1]Rainwater harvesting (RWH) is the collection and storage of rain, rather than allowing it to run off.. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit (well, shaft, or borehole), aquifer, or a reservoir with percolation, so that it seeps down and restores the ground w

  6. Rechargeable battery - Wikipedia

    en.wikipedia.org/wiki/Rechargeable_battery

    The developers claim a large increase in recharge cycles to around 40,000 and higher charge and discharge rates, at least 5 C charge rate. Sustained 60 C discharge and 1000 C peak discharge rate and a significant increase in specific energy, and energy density. [43] lithium iron phosphate batteries are used in some applications.

  7. Battery charger - Wikipedia

    en.wikipedia.org/wiki/Battery_charger

    Rapid charging results in even faster recharge times and is limited only by available AC power, battery type, and the type of charging system. [21] Onboard EV chargers (change AC power to DC power to recharge the EV's pack) can be: Isolated: they make no physical connection between the A/C electrical mains and the batteries being charged. These ...