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2. Cat repeller - Wikipedia

   en.wikipedia.org/wiki/Cat_repeller

   These devices are usually combined with a motion sensor which is triggered by movement within the sensors range. This causes the device to emit high frequency noise which is uncomfortable to the cats, and inaudible to most humans (although they can still experience unpleasant subjective effects and, potentially, shifts in the hearing threshold ...

3. Animal repellent - Wikipedia

   en.wikipedia.org/wiki/Animal_repellent

   An animal repellent consists of any object or method made with the intention of keeping animals away from personal items as well as food, plants or yourself. Plants and other living organisms naturally possess a special ability to emit chemicals known as semiochemicals as a way to defend themselves from predators.

4. Active Life: Outdoor Challenge - Wikipedia

   en.wikipedia.org/wiki/Active_Life:_Outdoor_Challenge

   Active Life: Outdoor Challenge is a fitness game controlled by a mat on the floor that responds to hand or feet movement on specific areas on the mat. The game has multiple control styles, which vary depending on the game. The mat used to control the game has a total of 10 buttons, each with different purposes.

5. Motion detector - Wikipedia

   en.wikipedia.org/wiki/Motion_detector

   A motion detector attached to an outdoor, automatic light. A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection).Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.

6. Chemotaxis - Wikipedia

   en.wikipedia.org/wiki/Chemotaxis

   The situation is the opposite with regard to repellents: fully methylated MCPs respond best to repellents, while least-methylated MCPs respond worst to repellents. [ citation needed ] This regulation allows the bacterium to 'remember' chemical concentrations from the recent past, a few seconds, and compare them to those it is currently ...

7. Buttered cat paradox - Wikipedia

   en.wikipedia.org/wiki/Buttered_cat_paradox

   The title character seeks to test this theory, leading to the cat hovering above the ground and the cat's wagging tail providing propulsion. The March 31, 2005, strip of the webcomic Bunny also explored the idea in the guise of a plan for a "Perpetual Motion MoggieToast 5k Power Generator", based on Sod's law . [ 11 ]