4 résultats pour "bubbles"

• CHARLIE BUBBLES

• The Saponification

  // III.)The energy needed With the surface tension decreased, the soapy water needs some energy to form bubbles. This energy comes from us blowing, waving, or even when the tap is flowing. This puts air into the bubble and the bubble is created. The bubble is mostly spherical because it is the shape that consumes the less energy. Plus it needs less air than a cube or a pyramid. Bubbles are generally small because it takes less energy and less molec...

• Diving (underwater).

  compensator (or control) device (BCD or BC), which the diver wears as a vest. By adding air to the BCD, the diver becomes more buoyant and rises. By releasing air,the diver becomes less buoyant and sinks. With minor adjustments of air, the diver can achieve neutral buoyancy. A third hose attaches to pressure gauges that diversuse to monitor how much air remains in the tank. A fourth hose attaches to a backup breathing device called an alternate air source, or octopus. Divers also wear a belt w...

• Jupiter (planet) - astronomy.

  Beneath the supercritical fluid zone, the pressure reaches 3 million Earth atmospheres. At this depth, the atoms collide so frequently and violently that the hydrogenatoms are ionized—that is, the negatively charged electrons are stripped away from the positively charged protons of the hydrogen nuclei. This ionization results in asea of electrically charged particles that resembles a liquid metal and gives rise to Jupiter’s magnetic field. This liquid metallic hydrogen zone is 30,000 to 40,000 k...