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2. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   The unit controllers typically have analog and digital inputs that allow measurement of the variable (temperature, humidity, or pressure) and analog and digital outputs for control of the transport medium (hot/cold water and/or steam). Digital inputs are typically (dry) contacts from a control device, and analog inputs are typically a voltage ...

3. Bang–bang control - Wikipedia

   en.wikipedia.org/wiki/Bang–bang_control

   Symbol for a bang–bang control. In control theory, a bang–bang controller (hysteresis, 2 step or on–off controller), is a feedback controller that switches abruptly between two states. These controllers may be realized in terms of any element that provides hysteresis. They are often used to control a plant that accepts a binary input, for ...

4. Hydroponics - Wikipedia

   en.wikipedia.org/wiki/Hydroponics

   A rotary hydroponic garden is a style of commercial hydroponics created within a circular frame which rotates continuously during the entire growth cycle of whatever plant is being grown. While system specifics vary, systems typically rotate once per hour, giving a plant 24 full turns within the circle each 24-hour period.

5. Man left in critical condition after assault - AOL

   www.aol.com/man-left-critical-condition-assault...

   Police are appealing for "potentially important" witnesses to come forward after a man suffered a serious head injury in an assault in Westerham.

6. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com/news

   Get breaking news and the latest headlines on business, entertainment, politics, world news, tech, sports, videos and much more from AOL

7. Aquaponics - Wikipedia

   en.wikipedia.org/wiki/Aquaponics

   Aquaponics is a food production system that couples aquaculture (raising aquatic animals such as fish, crayfish, snails or prawns in tanks) with hydroponics (cultivating plants in water) whereby the nutrient-rich aquaculture water is fed to hydroponically grown plants.

8. Ford, GM donate $1 million and contribute vehicles to Trump's ...

   www.aol.com/news/ford-donates-1-million-fleet...

   DETROIT (Reuters) -U.S. automakers Ford Motor and General Motors will donate $1 million each, along with vehicles, to U.S. President-elect Donald Trump's January inauguration, company ...

9. The movies we can’t wait to see in 2025 - AOL

   www.aol.com/movies-t-wait-see-2025-184928084.html

   After a year filled with animated inner emotions, mutants, aliens, gladiators and witches, the new year will bring a crop of new (or, newly revisited) movies to choose from, as always.