Context: When two surfaces are in contact, friction is always present. Definition: To pull along with difficulty or effort. Context: An airplane comes to a stop because of the drag or pull on it as it moves through air and across a surface. Definition: Strength or energy exerted. Context: A force can change the direction of motion, increase the rate of motion, slow down motion, or stop it all together. Definition: The rubbing of one object or surface against another; the force that resists motion between bodies in contact. Context: Bicycle brakes use friction to stop the wheels from turning.
Caffeine CAN halt hair loss, says German scientist. By Marika Sboros. You know the kick caffeine in a cup of coffee gives to your body and mind first thing in the morning. Now, German scientist Dr Adolph Klenk says that same caffeine can prevent hereditary and hormonal hair loss in men and women. Klenk was in South Africa recently to present his pioneering research on caffeine and hair loss to delegates attending the second international conference of the Dr Wolff Group in Cape Town.
Not surprising, the effects may lead to overeating and weight gain. Conclusion. If youâre getting the idea that caffeine can have lots of different effects on your weight, youâre on the right track. And this is why people have been unable to prove that caffeine causes weight-loss.While the chemistry of caffeine is clearly not simple, the evidence for caffeine in weight-loss is pretty weak when the potential for weight gain is considered.affeine, however, does increase heart rate and insomnia and can have significant negative health effects, including death, if taken in too high of a dose. Also, because it is habit-forming, caffeine leads to unpleasant withdrawal symptoms such as headache, grogginess and irritability.