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2. Suction cup - Wikipedia

   en.wikipedia.org/wiki/Suction_cup

   The working face of the suction cup is made of elastic, flexible material and has a curved surface. [3] When the center of the suction cup is pressed against a flat, non-porous surface, the volume of the space between the suction cup and the flat surface is reduced, which causes the air or water between the cup and the surface to be expelled past the rim of the circular cup.

3. Self-sealing suction cup - Wikipedia

   en.wikipedia.org/wiki/Self-sealing_suction_cup

   The self-sealing suction cup is a suction cup that exerts a suction force only when it is in physical contact with an object. Unlike most other suction cups, it does not exert any suction force when it is not in contact with an object. [1] Its grasping ability is achieved entirely through passive means without the use of sensors, valves, or ...

4. Plunger - Wikipedia

   en.wikipedia.org/wiki/Plunger

   For the common plunger, the cup is pushed down against the drain opening, either pressing hard into the drain to force air in or pushing down until the rubber cup is flattened. The cup is then pulled out, creating a vacuum to pull blockage material upward and dislodge waste or other material.

5. Space toilet - Wikipedia

   en.wikipedia.org/wiki/Space_toilet

   The space toilet includes foot restraints and handholds for astronauts to keep themselves from floating away. Everyone positions themselves differently while "going", and consistent astronaut feedback indicated that the traditional thigh straps were a hassle. [4] Toilet paper, wipes, and gloves are disposed of in water-tight bags.

6. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

7. 5 Expensive Vacation Destinations That Will Be Cheaper in 2025

   www.aol.com/finance/5-expensive-vacation...

   Australia’s tourism industry’s emphasis on offering high-value-driven packages and experiences is bound to steadily make the country much more appealing to tourists.” Hawaii (Oahu, Maui and ...