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2. Trickle charging - Wikipedia

   en.wikipedia.org/wiki/Trickle_charging

   Trickle charging is the process of charging a fully charged battery at a rate equal to its self-discharge rate, enabling the battery to remain at its fully charged level. This state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load.

3. Centrifugal extractor - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_extractor

   Multistage centrifugal extractor cross section drawing The feed solution initially containing one or more solutes (heavy phase on the cross section drawing Fig 3.), and an immiscible solvent having a different density (light phase on cross section sketches) flow counter-currently through the extractor’s rotor, designed with a stack of ...

4. Nickel–metal hydride battery - Wikipedia

   en.wikipedia.org/wiki/Nickel–metal_hydride_battery

   Lithium batteries produce a higher voltage (3.2–3.7 V nominal), and are thus not a drop-in replacement for AA (alkaline or NiMh) batteries without circuitry to reduce voltage. Although a single lithium cell will typically provide ideal power to replace 3 NiMH cells, the form factor means that the device still needs modification.

5. Liebig condenser - Wikipedia

   en.wikipedia.org/wiki/Liebig_condenser

   Liebig condenser. The Liebig condenser (/ ˈ l iː b ɪ ɡ /, LEE-big) [1] or straight condenser is a piece of laboratory equipment, specifically a condenser consisting of a straight glass tube surrounded by a water jacket.

6. Oxford Electric Bell - Wikipedia

   en.wikipedia.org/wiki/Oxford_Electric_Bell

   The experiment consists of two brass bells, each positioned beneath a dry pile (a form of battery), the pair of piles connected in series, giving the bells opposite electric charges. The clapper is a metal sphere approximately 4 mm (3 ⁄ 16 in) in diameter suspended between the piles, which rings the bells alternately due to electrostatic ...

7. Continuous stationery - Wikipedia

   en.wikipedia.org/wiki/Continuous_stationery

   Continuous stationery (UK) or continuous form paper (US) is paper which is designed for use with dot-matrix and line printers with appropriate paper-feed mechanisms. Other names include fan-fold paper , sprocket-feed paper , burst paper , lineflow (New Zealand), tractor-feed paper , and pin-feed paper .