metal gear the phantom pain ps5

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Biting on aluminum foil can be painful. Why?

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­Biting on aluminum foil can be painful and is­ usually noticed if you have metal in your mouth from dental work (e.g. fillings, crowns). Basically, when you bite on foil, you set up a battery in your mouth and the electrical current stimulates nerve endings in your tooth. Here is what happens:

• pressure from biting brings two dissimilar metals (aluminum foil, mercury in fillings or gold in crowns) in contact in a moist, salty environment (saliva)
• the two metals have an electrochemical potential difference or voltage across them
• electrons flow from the foil into the tooth (i.e. electrical current)
• the current gets conducted into the tooth's root, usually by the filling or crown
• the current sets off a nerve impulse in the root's nerve
• the nerve impulse is sent to the brain
• the brain interprets the impulse as pain

­The production of electric current between two metals in contact is called the voltaic effect after Alessandro Volta, who discovered it. Early batteries were made by st­acking metal discs together in a pile called a voltaic pile .

If you have no metal dental work in your mouth, you should not feel this effect.

For more information on aluminum and related topics, check out the links on the next page.

Lots More Information

­­Related HowStuffWorks Articles­

• How Aluminum Works
• Aluminum Quiz
• ­How Batteries Work
• How Electricity Works
• Ho­w Your Brain Works

More Great Links

• A Voltaic Pile
• Voltaic Pile­
• Alessandro Volta

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Metal Gear Solid V: The Phantom Pain

• PS Plus required for online play
• In-game purchases optional
• Supports up to 16 online players with PS Plus
• Online play optional
• Remote Play supported
• PS4 Version DUALSHOCK 4 vibration

Taking place nine years after the events of MGSV: Ground Zeroes and the fall of Mother Base, Snake a.k.a. Big Boss, awakes from a near decade-long coma. The game resumes the story in 1984, with the Cold War still as the backdrop, which continues to shape a global crisis. Snake’s journey takes him into a world where he is driven by a need for revenge and the pursuit of a shadow group, XOF. METAL GEAR SOLID V: The Phantom Pain continues to ambitiously explore mature themes such as the psychology of warfare and the atrocities that result from those that engage in its vicious cycle. One of the most anticipated games of the year with its open-world design, photorealistic visual fidelity and feature-rich game design, MGSV: The Phantom Pain will leave its mark as one of the hallmarks in the gaming industry for its cinematic storytelling, heavy themes, and immersive tactical gameplay.

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