Why is a cross-headed screwdriver called a 'Philips' screwdriver?

Answer In the early 1930s, the Phillips head screw was invented by Henry Phillips. Automobile manufacturers now used car assembly lines. They needed screws that could take greater torque and could provide... Read More »

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How to Make a Vodka Screwdriver?

The screwdriver is not only a popular drink, but also a drink that is very easy to prepare. Here's how to make one for yourself.

How to Make a Twist of a Screwdriver?

Every vodka fan knows what a screwdriver is, and may have their own twist to the drink. Here's a sweet twist to the famous screwdriver drink.Serves 4

How to Make a Low Calorie Screwdriver?

This low-calorie screwdriver recipe lowers the amount of vodka and orange juice to minimize calories. Then, the drink is topped with diet lemon-lime soda. The result is a slightly carbonated drink ... Read More »

How does the amount of work the screwdriver does on the can compare with the amout of work you do on the screwdriver?

A screwdriver should be 100% efficient, if there are any small losses they will be due to deforming the screwhead, or frictional losses on the screwhead.