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February 10, 2012
Lisa M. Krieger: Man with defibrillator demands access to his own heart's information
David G. Savage: Why activists may not be in a hurry to have High Court rule on alternative marriage
February 9, 2012
Laura McMullen: 10 Least Expensive Public Schools for Out-of-State Students
Kimberly Palmer: How to actually enjoy -- relaxing, financially -- your vacation
February 8, 2012
Warren Richey: Why momentous Prop. 8 ruling might not satisfy gay-rights groups
Menachem Wecker: Though Controversial, LL.M.'s Can Lead to Specialized Legal Jobs
The Kosher Gourmet byDana Velden: Going to the bother of making soup? You know it better be good. This CREAM OF TOMATO SOUP certainly is! And it's a cinch to make, too (Includes techinques and serving secrets)
February 7, 2012
Frank J. Gaffney, Jr.: Caught off-guard? President's Super Bowl interview with Matt Lauer gives those who need a reason not to vote for him, a darn good one
Suzanne Bohan: Leaping lizards! Tiny reptiles advancing robot design
February 6, 2012
Jonathan Tobin: Iran Threatens Israel With Destruction, But the New York Times Doesn't Hear It
Jeffrey Fleishman: In newly democratic Egypt, tens of democracy activists jailed, to stand trial; their groups are 'threatening the stability of the homeland'
Julie Deardorff : Researchers say antioxidants may not be that effective and could do more harm than good
Mark Clayton: How did Anonymous hackers eavesdrop on FBI and Scotland Yard?
February 3, 2012
Edmund Sanders : Israeli official says Iran is creating missile that could reach East Coast of US
Victoria Kim: Immigrant-smuggling ring used black drivers to avoid racial profiling
February 2, 2012
Jim Carney: Wrong number call may have saved her life
Reza Kahlili : Ex-CIA spy in Iran's Revolutionary Guard: What Obama doesn't grasp about striking deals with Tehran
Tina Susman: For woodchuck rescuer, every day is Groundhog Day
February 1, 2012
Brian Bennett: US officials see increasing threat of domestic attack from Iran
Emily Brandon: How to Take Advantage of New 401(k) Fee Disclosures
January 31, 2012
January 30, 2012
Paul Richter and Ramin Mostaghim: Misreading Teheran's limits -- deadly and economically devastating as they may be -- is a risk administration, Europe seem willing to take
Suzanne Bohan: Warning: Nap-deprived tots missing more than sleep, study finds
Meg Handley: Banks Revamping Rewards Programs to Woo Customers
January 27, 2012
Caroline B. Glick: Obama: Of course I intend to prevent a nuclear holocaust . . . in a few months
Yochonon Donn: In liberal New York City, fervently-Orthodox Jews may soon be getting a district to call their own
Jeannine Stein: An inflated ego and thinking you're 'all that' doesn't just make others sick of you, it can make you ill
Katy Hopkins: New budget rules may affect how much money you get for college
January 26, 2012
Ed Koch: To the New York Times, calling for the murder of Jews by those capable of having their incitement taken seriously isn't news
Jeannine Stein: Mental illness struck one in five U.S. adults in 2010: Report
January 25, 2012
Richard Simon: House passes two bills endorsing the use of religious symbols at military memorials
Fred Weir: Putin: Multiethnic Russia cannot survive as a US-style 'melting pot'; must find its own way
Susan Johnston: 5 Sneaky Coupon Strategies Consumers Should Watch Out For
January 24, 2012
Carol Clark: The price of your soul: How your brain decides whether to 'sell out'
Caroline B. Glick: America lost most in 'Arab Spring'. Sadly, many voters still don't grasp the extent
Warren Richey: Drug criminal scores win in GPS ruling from conservative-leaning high court
Erika Bolstad: Black conservatives gather to talk about gaining strength
January 23, 2012
Melissa Dribben: Jewish voters to play a key role in Florida's Republican primary
Jordan Rau: In quest to grow, Catholic hospital system will announce this morning its break from church
Ali Safi: U.S. envoy gives Taliban terms for peace talks
January 19, 2012
January 18, 2012
January 17, 2012
Frank J. Gaffney Jr.: No-kidding red lines: U.S. response to an Iranian nuke may be bluster, but Israel's won't be
David G. Savage: They sued their principals after slandering them online --- now the cases are headed to the Supreme Court
David Francis: Where to Invest in 2012: With stocks expected to rebound, opportunity abounds for investors
January 13, 2012
Ben Lynfield: Israeli lawmakers move to annex Jewish Judea, one museum at a time
Alexia Elejalde-Ruiz: Thriving through touch: Gentle massage helps older people with low mobility improve in mind and body
January 12, 2012
Warren Richey: Landmark Supreme Court ruling a 'resounding win' for religious groups
Warren Richey: Supreme Court says no to new rule on eyewitness testimony
John Fauber : Statins found to raise diabetes risk in postmenopausal women
Katy Hopkins : Consider This Before You Pay for an Online Degree
The Kosher Gourmet by Joseph Erdos: This mushroom and barley soup has an intense -- almost nutty -- flavor that mixes robust with Middle East. It has creaminess without cream
January 11, 2012
Shari Roan: Millions of atrial fibrillation sufferers at risk for devastating, but preventable, stroke
Tom Hussain: Pakistan -- recipient of more than $21 billion in civilian and military aid -- speeds pursuit of Iranian pipeline, defying US
David G. Savage: High court signals it won't be loosening TV's 'indecency' rules
Stephen Ceasar: Oklahoma's Islamic law amendment can't go into effect, court rules
January 10, 2012
Reza Kahlili: From an ex-CIA spy: US must exploit new split in Iran's Revolutionary Guard
Karen Kaplan: Study: Nicotine replacement products ineffective when used in real-life situations
January 9, 2012
Michael Doyle: Put through legal hell over dream home, couple fought back hard --- all the way to Supreme Court
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Jewish World Review
How Stuff Works: How alcohol works
By
Marshall Brain
http://www.JewishWorldReview.com | (MCT)
Alcohol has a huge effect on our society, as well as on the economy, for two different reasons. The first is because of the alcohol people drink — beer, wine, whiskey, rum and so on. The second is because of the different kinds of alcohol. You may have heard of ethanol, methanol, isopropyl alcohol, denatured alcohol and rubbing alcohol. Let's take a look at how alcohol works.
The alcohol that people drink comes from yeast. If you take yeast cells and give them a source of sugar or starch, they will eat it. The yeast will produce both alcohol and carbon dioxide as its waste products. If you crush grapes to make grape juice and add yeast, for example, the yeast will eat the sugar in the grape juice and start making alcohol. It is natural for grape juice to turn into wine.
You can do the same kind of thing with just about any sugar or starch, including barley (the starting point for beer), corn (the starting point for whiskey), molasses (the starting point for rum) and so on. Add water and yeast and you get alcohol. Yeast eventually create so much alcohol that they kill themselves off, and the limit is about 13 percent alcohol.
If you want stronger alcohol you distill it by heating it. The alcohol has a lower boiling point than the water. If you collect the alcohol vapor and condense it back into a liquid, you get a distilled spirit. In the case of wine, the spirit is called brandy and it might be 40 percent or 50 percent alcohol. The original idea behind brandy, by the way, was to make wine easier to ship. It was a sort of wine concentrate — the same idea behind orange juice concentrate. Just add water.
Why does alcohol cause people to act differently when they drink it? The alcohol molecule interacts with nerve cells and tends to slow down their ability to communicate with each other. Since the brain and spinal cord are full of nerve cells, alcohol changes how you think and move. Small amounts of alcohol dampen inhibitions and increase risk-taking. More alcohol starts to affect the ability to walk and talk. Even more alcohol eventually causes unconsciousness.
Your body absorbs the alcohol into the bloodstream through the small intestines. Your liver is in charge of filtering the alcohol back out of your blood. Your liver can handle about half an ounce of pure alcohol in an hour. A car of beer, a glass of wine and a shot of whiskey all contain about half an ounce of alcohol. So if you drink a can of beer, its alcohol gets eliminated about an hour after it is absorbed.
Your body isn't the only thing that consumes alcohol. Now your car can too. When you pull up at a gas station and it is selling ethanol, you are putting what is essentially very pure whiskey into your car. Ethanol starts with corn and yeast just like whiskey does. But the alcohol in ethanol fuel is distilled to the point where it is nearly pure, while whiskey is only about half alcohol and half water. It is the same molecule in both however — C2H6O.
What is denatured alcohol that you find at the drug store or the hardware store?
It too is ethanol. But it has been poisoned to keep people from drinking it. It turns out that ethanol is a good solvent, and also useful as a fuel in things like alcohol stoves and lamps. But if you sold ethanol for $5 a gallon at the hardware store, lots of people would be drinking it to avoid the "sin taxes" on beer, wine and whiskey. So they poison the ethanol and sell it without the sin taxes.
Methanol and isopropyl alcohol are both similar to ethanol but poisonous to people. They are made chemically rather than with yeast. Methanol starts as methane in natural gas and turns into CH4O. It is best known as the fuel for Indy cars. Isopropyl alcohol is C3H8O. It is inexpensive to make and is often found as rubbing alcohol at the drug store. It too is a good solvent and a fuel.
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Previously:
How high speed rail works
How car bombs work
How laparoscopic surgery works
How diesel engines work
How calories work (and how many you need in a day)
How saving money on electricity works
How whiskey works
How IQ tests work
How a quartz watch works
How ice skating rinks work
How glass works
How blimps work
How space stations work
How toasters work
How a cell phone works
What went obsolete in the last decade?
How cholesterol works
How leather works
How vaccines work
How the smart grid works
How sea level works
How employee screening works
How to avoid catching a cold
How bread works
How a home energy audit works
How Omega-3 fatty acids work
Social networking
How trick birthday candles work
How electric cars like the Nissan Leaf work
How a manned mission to Mars works
How gold works
How bad breath works
How the ultimate sunglasses work
Any rocket is easily converted to a missile
How to have a great staycation
How a black box works
How a solar roof works
How nuclear bombs work
How the Hubble Space Telescope works
How hay fever works
How to know when to rent vs. buy
How swine flu works
How a kidney dialysis machine works
How children die in hot cars
How a trillion dollars works
How electronic cigarettes work
How chimpanzees work
How in vitro fertilization works
How supertankers work
How poisons work
How corn works
How dog ID chips work
How President Obama's limousine works
How emergency power works
How aircraft carriers work
How antibiotics and vaccines work
How mucus works
How iron and steel work
How aspirin works
How igloos work
How the Predator UAV works
How retention ponds work
How water absorbers work
How melamine works
How digital music works
How coal mining works
How an economic depression works
How the liver works
How 3D movies work
How oil pipelines work
How jet packs work
How seismographs work
How Olympic technology works
How Personal Rapid Transit works
How 3G works
How the Global Position System (GPS) works
How octane works
How cruise missiles work
How submarines work
How miles work
How octane works
How food preservation works
How beer works
How holding your breath works
How smoke detectors work
How heat pumps work
How your night vision works
How concentrating solar collectors work
How your key fob works
How the common cold works
How the Large Hadron Collider Works
How making a TV show works
How dry cleaning works
How exoskeletons work
How an oil refinery works
How landfills work
How the Orion spacecraft works
The cutting edge in HDTV
Redefining the CD
How the HDMI cable scam works
How glow-in-the-dark toys work
How the subprime mortgage crisis works
How gift cards work
How Tasers work
How giant TV screens work
How foreclosure works
How Air Force One works
How wildfire fighting works
How vitamins work
How ejection seats work
How reattaching limbs works
How hot air balloons work
How paparazzi work
How counterfeiting works
How CDs work
How the Edsel worked
How Stinger missiles work
How hybrid cars work
How sharks work
How mosquitoes work
How diesel engines work
How water towers work
How the Dawn mission works
How Kassam rockets work
How the North American Eagle works
Why aren't we flying to work?
How tofu and soy milk work
How Colony Collapse Disorder works
How airbags work
How the U.S. income tax works
How gum works
How caffeine works
How Daylight Saving Time works
How a cruise missile works
How snow making works
© 2007, How Stuff Works Inc. Distributed by McClatchy-Tribune Information Services.
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