News tagged with coffee
Balloon filled with ground coffee makes ideal robotic gripper (w/ Video)
(PhysOrg.com) -- The human hand is an amazing machine that can pick up, move and place objects easily, but for a robot, this "gripping" mechanism is a vexing challenge. Opting for simple elegance, researchers ...
Oct 25, 2010 |
5 / 5 (26) |
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Physicists see the cosmos in a coffee cup
(PhysOrg.com) -- A Duke University professor and his graduate student have discovered a universal principle that unites the curious interplay of light and shadow on the surface of your morning coffee with ...
Apr 14, 2009 |
4.6 / 5 (22) |
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Midlife coffee and tea drinking and the risk of late-life dementia
Midlife coffee drinking can decrease the risk of dementia/Alzheimer's disease (AD) later in life. This conclusion is made in a Finnish Cardiovascular Risk Factors, Aging and Dementia (CAIDE) Study published ...
Medicine & Health / Diseases, Conditions, Syndromes
Jan 15, 2009 |
4.3 / 5 (21) |
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Physicists undo the 'coffee ring effect' (w/ video)
A team of University of Pennsylvania physicists has shown how to disrupt the "coffee ring effect" the ring-shaped stain of particles leftover after coffee drops evaporate by changing the particle ...
Aug 17, 2011 |
4.5 / 5 (13) |
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Scientists Make Temperature-Regulating Coffee Mug
(PhysOrg.com) -- A well-insulated mug may keep your coffee somewhat warm, but now scientists have designed a high-tech mug that can keep drinks hot or cold at the perfect temperature for up to half an hour. ...
Engineers introduce 'beans' to cool and then maintain hot beverage temps
(PhysOrg.com) -- Buddies and mechanical engineers, Dave Petrillo and Dave Jackson, have, thanks to Kickstart.com, begun a business selling the Coffee Joulie (clearly a play on the word for joule, a unit of ...
Coffee or tea: Enjoy both in moderation for heart benefits
Coffee and tea drinkers may not need to worry about indulging - high and moderate consumption of tea and moderate coffee consumption are linked with reduced heart disease, according to a study published in ...
Jun 18, 2010 |
4.7 / 5 (9) |
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Why coffee protects against diabetes
Coffee, that morning elixir, may give us an early jump-start to the day, but numerous studies have shown that it also may be protective against type 2 diabetes. Yet no one has really understood why.
Medicine & Health / Medical research
Jan 13, 2011 |
4.7 / 5 (9) |
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Michelangelos make smart lovers: New study shows that partners sculpt each other to achieve their ideal selves
Is that really Bob? You've seen him hundreds of mornings for the last 10 years at local coffee shops. Since he started dating Sara, he looks you in the eye -- and smiles. Sara takes every opportunity to let coffee shop cronies ...
Medicine & Health / Psychology & Psychiatry
Dec 16, 2009 |
4 / 5 (10) |
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BBC Science Team Builds Coffee Fueled Car... The Carpuccino
(PhysOrg.com) -- Think you need a lot of coffee to get going in the morning? How about 56 espressos? That’s the kind of power the experimental car, the "Carpuccino," needs just to travel one mile!
Got a craving for fast food? Skip the coffee, study says
Eating a fatty fast food meal is never good for you, but washing that meal down with a coffee is even worse, according to a new University of Guelph study.
Apr 01, 2011 |
4.9 / 5 (8) |
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New evidence that drinking coffee may reduce the risk of diabetes
Scientists are reporting new evidence that drinking coffee may help prevent diabetes and that caffeine may be the ingredient largely responsible for this effect. Their findings, among the first animal studies ...
Jun 09, 2010 |
4.2 / 5 (9) |
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A steep(ing) learning curve on tea
It's true that, unlike the rest of the world, Americans more often drink our tea instant and iced. But a revolution is brewing. We're warming up to the beneficial qualities of tea, the second most popular drink on the planet ...
Feb 23, 2009 |
3.3 / 5 (11) |
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Coffee consumption unrelated to alertness
(PhysOrg.com) -- The stimulatory effects of caffeine may be nothing more than an illusion according to new research, which shows there is no real benefit to be gained from the habitual morning cup of coffee.
Medicine & Health / Psychology & Psychiatry
Jun 02, 2010 |
3.5 / 5 (10) |
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Gene found to have jumped from gut bacteria to beetle
(PhysOrg.com) -- Genes jumping between bacteria are rather common which in part explains their ability to rapidly develop immunity to antibacterial agents. Whats not so common are examples of genes jumping ...
Coffee
Coffee is a brewed beverage prepared from roasted seeds, commonly called coffee beans, of the coffee plant. Due to its caffeine content, coffee can have a stimulating effect in humans. Today, coffee is one of the most popular beverages worldwide.
It is supposed that the Ethiopians, the ancestors of today's Galla tribe, were the first to have discovered and recognized the energizing effect of the coffee bean plant. However, no direct evidence has ever been found revealing exactly where in Africa coffee grew or who among the natives might have used it as a stimulant or even known about it there earlier than the seventeenth century. The earliest credible evidence of either coffee drinking or knowledge of the coffee tree appears in the middle of the fifteenth century, in the Sufi monasteries of the Yemen in southern Arabia. From Yemen, coffee spread to Egypt and Ethiopia, and by the 15th century, had reached Armenia, Persia, Turkey, and northern Africa. From the Muslim world, coffee spread to Italy, then to the rest of Europe, to Indonesia, and to the Americas.
Coffee berries, which contain the coffee bean, are produced by several species of small evergreen bush of the genus Coffea. The two most commonly grown species are Coffea canephora (also known as Coffea robusta) and Coffea arabica; less popular species are Liberica, Excelsa, Stenophylla, Mauritiana, Racemosa. These are cultivated primarily in Latin America, Southeast Asia, and Africa. Once ripe, coffee berries are picked, processed, and dried. The seeds are then roasted, undergoing several physical and chemical changes. They are roasted to varying degrees, depending on the desired flavor. They are then ground and brewed to create coffee. Coffee can be prepared and presented in a variety of ways.
Coffee has played an important role in many societies throughout history. In Africa and Yemen, it was used in religious ceremonies. As a result, the Ethiopian Church banned its secular consumption until the reign of Emperor Menelik II of Ethiopia. It was banned in Ottoman Turkey in the 17th century for political reasons, and was associated with rebellious political activities in Europe.
Coffee is an important export commodity. In 2004, coffee was the top agricultural export for 12 countries, and in 2005, it was the world's seventh-largest legal agricultural export by value.
Some controversy is associated with coffee cultivation and its impact on the environment. Many studies have examined the relationship between coffee consumption and certain medical conditions; whether the overall effects of coffee are positive or negative is still disputed.
For more information about Coffee, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.