question: Why does the bottle of the deodorant get really cold when you erase all the air from it?
comment: The deodorant in the can is under pressure when the deodorant is released it expands the expanding deodorant absorbs heat leaving the area colder , sometimes frozen. Doing this over and over in a closed system is how an air conditioner cools.
passages: Section::::Inert atmosphere work.
   On October 1, 2010, Apple was ordered to pay $625.5 million to Mirror Worlds LLC for infringing utility patents relating to Cover Flow. On April 4, 2011, Judge Davis reversed the judgement.
  
  With the release of version 11 of iTunes, Cover Flow was removed from the iTunes interface.
  
  iOS 7 saw Cover Flow replaced by "album wall". This feature shows tiles of album art in rows when the device is in landscape. This feature was removed with the release of iOS 8.4 on June 30, 2015
  
  In macOS Mojave, Cover Flow was removed from Finder and replaced by gallery view.
   Aerosol burn
  
  An aerosol burn is an injury to the skin caused by the pressurized gas within an aerosol spray cooling quickly, with the sudden drop in temperature sufficient to cause frostbite to the applied area. Medical studies have noted an increase of this practice, known as "frosting", in pediatric and teenage patients.
  
  Adiabatic expansion causes the gas (with a low boiling temperature) to rapidly cool on exit from the aerosol applier. According to controlled laboratory experiments, the gas from a typical deodorant spray can reduce skin temperature by up to sixty degrees Celsius.
   The scent's Energizing Shower Gel was released exclusively in Europe, in one size—
  
  BULLET::::- 200ml / 6.7 oz
   Warm, moist air is drawn into the unit at A in the diagram above. This air passes into a crossflow plate heat exchanger (B) where a substantial proportion of the sensible heat is transferred to a cool supply air stream. This process brings the extracted air close to saturation. The air then passes to the plenum chamber of the extract fan (C) where a portion of it may be rejected to outside. The amount that is rejected can be varied and is
   Products
  
  BULLET::::- 50 ml/ 1.7 oz
  
  Section::::Related products.:Heat Rush.
   In an independent space suit, the heat is ultimately transferred to a thin sheet of ice (formed by a separate feed water source). Due to the extremely low pressure in space, the heated ice sublimates directly to water vapor, which is then vented away from the suit.
   Section::::Different types of installations.
  
  Section::::Different types of installations.:Typical installations.
   BULLET::::- Conductive heat transfer: The flow of thermal energy through a substance from a higher to a lower temperature region. Foam thermoset plastics reduce conductive heat transfer due in part to having very loose molecular bonds; In addition the cells of the installed spray foam are either filled with air in the case of open cell foam or 245fa in closed cell foam.
   In an interview with Zane Lowe on BBC Radio 1, Arctic Monkeys frontman Alex Turner said that the album title was inspired by the Velvet Underground's 1985 compilation album "VU": "I actually stole it from the Velvet Underground, I'll just confess that now and get it out of the way. The 'VU' record, obviously." He went on to say: "Did we cop out? Yeah! Summat about it feels like this record is exactly where we should be right now. So it felt right to just initial it."
   Section::::Chart performance.
   Vacuum technology is also used in some non-transparent insulation products called vacuum insulated panels.
   Perfumes are best preserved when kept in light-tight aluminium bottles or in their original packaging when not in use, and refrigerated to relatively low temperatures: between 3–7 °C (37–45 °F). Although it is difficult to completely remove oxygen from the headspace of a stored flask of fragrance, opting for spray dispensers instead of rollers and "open" bottles will minimize oxygen exposure. Sprays also have the advantage of isolating fragrance inside a bottle and preventing it from mixing with dust, skin, and detritus, which would degrade and alter the quality of a perfume.
   On January 21, 2006 Nike launched the Air Max 360, a new shoe design that utilized Max Air throughout the shoes midsole.
   Usually,the gas is the vapor of a liquid with boiling point slightly lower than room temperature. This means that inside the pressurized can, the vapor can exist in equilibrium with its bulk liquid at a pressure that is higher than atmospheric pressure (and able to expel the payload), but not dangerously high. As gas escapes, it is immediately replaced by evaporating liquid. Since the propellant exists in liquid form in the can, it should be miscible with the payload or dissolved in the payload. In gas dusters and freeze sprays, the propellant itself acts as the payload. The propellant in a gas duster can is not "compressed air" as sometimes assumed, but usually a haloalkane.
   Underarm hair wicks the moisture away from the skin and aids in keeping the skin dry enough to prevent or diminish bacterial colonization. The hair is less susceptible to bacterial growth and therefore reduces bacterial odor. The apocrine sweat glands are inactive until puberty, which is why body odor often only becomes noticeable at that time.
  
  Deodorant products work in one of two ways - by preventing sweat from occurring, or by allowing it to occur but preventing bacterial activity that decomposes sweat on the skin.
  
  Section::::History.
  
  Section::::History.:Early deodorants.
   50 mints are contained in each package, with a net weight of 1.2 oz (34 g). The Canadian version only has 49 mints. In Australia the packaging has changed [ March 2019] to 17 g, but the price has remained at $2 that the original packaging was at when on special at Woolworths.
  
  Section::::Availability.
   Section::::Frostating seal.
   Section::::Related products.:"Heat": Limited edition CD.
   Products
  
  BULLET::::- 100 ml / 3.4 oz
  
  BULLET::::- 50 ml / 1.7 oz
  
  BULLET::::- 30 ml / 1.0 oz
  
  BULLET::::- 15 ml / 0.5 oz
  
  Section::::Related products.:Heat Kissed.
   Section::::Conception.:Packaging and scent.
   Section::::Promotion.:Commercial.
   It was revealed by Macy's Chief executive officer, Terry Lundgren, that his chain had sold US$3 million worth of Heat between early February 2010 and early March 2010. Lundgren revealed that, during a one-hour period at the launch of the scent when Beyoncé was at the store signing autographs, 72,000 bottles were sold. Within days of the fragrance's release, it was named as one of the best-selling scents in America. According to The Fragrance Shop in the UK, Heat also topped a poll of best-selling celebrity scents.
  
  Section::::Related products.
   On March 14, 2008, Mirror Worlds LLC sued Apple for infringing on its patents (nos. 6006227, 6638313, 6725427, and 6768999) (Mirror Worlds, LLC, vs Apple, Inc; Texas Eastern District Court) 
  
  On February 24, 2009, Cover Flow was also included with the public beta of Safari 4, with the final version of Safari 4, released on June 8, using Cover Flow to browse history, bookmarks, RSS feeds, Bonjour, and Address Book.
  
  In April 2010, Apple was granted US design patent D613,300 on the Cover Flow interface.
   During the WWDC Keynote on June 11, 2007, Steve Jobs announced that Cover Flow would be added as a view option in Mac OS X Leopard’s Finder.
  
  On September 5, 2007 Apple announced that Cover Flow would be utilized in the third generation iPod nano as well as the new iPod classic and iPod touch models. Cover Flow was integrated into the fourth generation iPod nano by the use of an accelerometer which accesses Cover Flow when the iPod nano is turned horizontally on its side.
  