What Polygraph instrument does?

Instrument that simultaneously records changes in physiological processes such as heartbeat, blood pressure and respiration used as a lie detector

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Why is it important to always wear my helmet?

Each year, about 150,000 children are treated in emergency rooms for head injuries that occurred while riding their bikes. Many bike-related injuries could be avoided if riders wore their helmets properly. Wearing a bike helmet reduces the risk of brain injury by as much as 88 percent and reduces the risk of injury to the face by 65 percent. That is why many state laws say that bicyclists under the age of 14 are required to wear approved bicycle helmets when they ride their bicycles. If your friends don’t wear helmets when you bicycle together, teach them by your wise example. In the United States, bicycle helmets save one life every day and prevent one head injury from happening every four minutes.

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Why doesn’t it hurt to cut my hair?

Haircuts don’t hurt because your hair is not alive. Hair is made out of a protein called keratin. Only the root of the hair—the part that grows inside the skin on your head from tiny holes called follicles—is alive and growing. So if you pluck out a hair by the roots, it hurts. But trimming or cutting your hair is painless. And that is also the same reason why it doesn’t hurt to trim your fingernails or toenails, which are also made of keratin. And because fingernails grow faster than toenails, you need to trim them more often!

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What do I do if my pet dies?

Like all living things, your pet will die someday. A pet can die from old age, an accident, or an illness. Even when a veterinarian (an animal doctor) helps, there are some illnesses that can’t be cured. If your pet is in a lot of pain and will never get better, your parents and the vet may decide that the animal should be allowed to die, or “put to sleep.” To make the process pain-free and peaceful, the vet can give the pet a special kind of injection (shot) to help it die. If your pet dies naturally, you may want to bury it in your back yard. But check with your town or city first to make sure burial on your property is legal. Some laws permit homeowners to bury their pets on their property, while others do not. Other options include burying your pet at a pet cemetery or cremating the animal, then scattering the ashes throughout your garden or under a favorite tree. No matter what you decide to do when your pet dies, many emotions are likely to surface, such as sadness, loneliness, or even anger. Talk to your parents about how you are feeling. You and your family may want to find special ways to remember your pet. You might have a ceremony, tell stories, write a poem, or make a scrapbook. And there are animal organizations, such as the ASPCA (the American Society for the Prevention of Cruelty to Animals) that can help you with the grieving process. A new animal can’t replace your old pet, but someday the time might be right for you and your family to adopt a new animal for everyone to love.

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What is the origin of the phrase, “I’ll be hanged if I do and hanged if I don’t”?

When America was fighting for its independence, the British poet Thelwall was arrested after enraging King George with his liberal, seditious support for the colonies. In prison he wrote to his lawyer, “I shall be hanged of I don’t plead my own case,” to which his lawyer replied, “You’ll be hanged if you do!” His lawyer got him off, and the phrase became a slogan that contributed to the demise of the royal cause in America.

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When a man gifted with charm seizes an opportunity,why do we say,“He’s in like Flynn”?

The Australian actor Errol Flynn had an amazing prowess with the ladies, and of course the tabloids built this into a legend. During the Second World War, servicemen coined the phrase “in like Flynn” either to brag about their own conquests or to describe someone they envied. Flynn said he hated the expression, but his own boast that he had spent between twelve and fourteen thousand intimate nights ensured its survival.

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