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.
School of Medicine, Family Medicine answered. Caffeine can affect headaches in different ways. For some people, caffeine helps to relieve a stress headache or migraine. It is believed to do this by altering blood flow to the blood vessels in the brain.However, caffeine withdrawal in someone who regularly drinks coffee or energy drinks or uses caffeine pills may also cause headaches.any headache medications contain caffeine, which definitely makes these medications work better. Many patients find having a cup of coffee or other caffeine-containing beverage with their medication helps it work better.