An accurate type of thermometer in which temperature is meansured by determining the electrical resistance of a coil of thin wire
Measures refractive indices
A cow, like all mammals, produces milk to feed its young. If its calf nurses regularly, the mother cow’s mammary glands will produce enough milk to give the baby animal all the food it needs. Gradually a calf will nurse less as grass and other feed makes up more of its diet. A mother cow, in turn, will produce less milk until it is no longer needed. But by milking the cows regularly—two or three times a day—dairy farmers can cause the cows to continue producing milk. Certain breeds of cows are particularly good at milk-making, producing 18–27 pints (around 2–3 gallons, or 10–15 liters) each day.
A cow’s large, round udder, located on its underside, has four nipples, or teats, that are squeezed to release stored milk. While once done by hand, milking is done on modern dairy farms by machines with suction hoses, which do the job more quickly and cheaply. Tank trucks collect milk from farms daily and take it to processing plants where it is pasteurized (made germ-free) and used to make dairy products like cheese, butter, and ice cream.
There are about 195 countries in the world today. But because the political world is constantly changing, that number never stays the same for very long. The number 195 includes Taiwan. Although Taiwan operates as an independent country, many countries (including the United States) do not officially recognize it as one. Of these countries, 192 belong to the United Nations (UN), an international organization that aims to get countries to cooperate with one another. The exceptions are Taiwan (in 1971, the UN disqualified Taiwan and replaced it with the People’s Republic of China), Vatican City, and Kosovo. The newest UN members are Switzerland (2002) and Montenegro (2006).
Human beings communicate through language, a complicated system of vocal symbols that our complex brains allow us to learn after we are born. But we also communicate through our bodies and senses. Our organ of touch is our skin, covering the outside of our bodies. (Nerve endings under the surface of skin give us our sense of touch.) Hugging and kissing are ways to share love and caring through touch. When you were born, well before you knew language and could understand caring words, you were learning about love through your sense of touch. As a newborn, when everything was frighteningly new, you immediately experienced the comfort of touch when you were held in your mother’s arms, feeling the warmth of her body and the beat of her heart, sensations familiar to you when you were inside her womb. You were held close when you first learned about food and about how good it felt to have milk in your empty stomach.
Your parents’ caring hands kept you clean and dressed in dry clothes when you could not yet do those things for yourself. So, from your earliest days, you learned that someone’s touch usually made you feel comfortable and safe. Loving and caring about special people in our lives is a feeling inside that is hard to describe in words. But hugs and kisses make it easy to show that love—and their message is clear. Giving hugs and kisses feels as good as getting them. (Because the lips have an extra supply of nerve endings, kissing is an especially intense way to touch.) The human need to share affection through touch is something we all experience throughout our lives.
Silica and Aluminum
1. 80% of women use silence to express pain. You know she’s truly hurt when she chooses to ignore you.
2. Psychology says, friendship is not about who you spend the most time with, it’s about who you have the best time with.
3. Psychology says, ironically, the more you hide your feelings, the more they show. The more you deny them, the more they grow.
4. Being sarcastic on a regular basis can add up to 3 yrs to your life. Sarcasm is extremely healthy for the mind.
5. Being able to respond with sarcasm to a stupid question within seconds is literally a sign of a healthy brain.
6. Bad relationships change good people.
7. Psychology suggest that sometimes you love someone so much that not even the truth can change your mind.
8. The loneliest people are the kindest. The saddest people smile the brightest. The most damaged people are the wisest.
9. Late night phone and text conversations tend to be the best.
10. Work hard in silence, let your success be your noise.
11. Psychology says, the person you care about the most can literally shatter your confidence with their opinions.
12. Psychology says: People tend to value memories more than actual people. Sometimes you miss the memories, not the actual person.
13. When it’s after 2am, just go to sleep. The decisions you make after 2am are always the wrong decisions.
14. Psychology says, your personality is who you are. Your attitude is usually based on how a person treats you.
15. 70% of people pretend to be okay simply because they don’t want to annoy others with their problems.
16. Positive events, such as graduating, getting married and a new job often lead to depression.
17. Psychology says, the lyrics in your favorite song express everything that you struggle to say or express to others.
18. Being in a relationship is not about kissing, dates or showing off. It’s about being with the person who makes you happy.
19. People who laugh more are better able to tolerate pain – Both physical and emotional.
20. Women are automatically more attracted to guys who make an effort to start the conversation, showing initiative and consistency.
21. Psychology claims that If two past lovers can remain just friends, its either they are still in love, or never were.
22. Generally, people are more likely to assume you’re being rude when you’re actually being honest.
23. Your age doesn’t define your maturity, your grades don’t define your intellect, and rumors don’t define who you are.
24. 90% of people will fake laugh when they don’t understand what someone said to them.
25. Psychology says, staying quiet doesn’t mean you’ve got nothing to say. It means you don’t think they’re ready to hear your thoughts.
Jupiter, Saturn, Uranus, and Neptune have rings—or thin belts of rocks—around them. Jupiter’s ring is thin and dark, and cannot be seen from Earth. Saturn’s rings are bright, wide, and colorful. Uranus has nine dark rings around it, and Neptune’s rings are also dark, but contain a few bright arcs.
At one time all of the planets, Earth included, had rings. These rings were unstable and the material was either lost in space or collected into the satellites of these planets.
Most adult insects, including bees and dragonflies, have two large compound eyes, made up of separate, sometimes thousands, of lenses. They all point in different directions to give the insect a very wide field of vision.
The lenses also help the insect see movement, enabling it to react quickly to seize its prey or escape danger. You can witness this yourself as you try to swat a fly in your home it’s almost impossible to catch a flying insect!
Fixed groups of stars that seem to form a particular shape, such as that of a person, animal, or object, are called constellations. Astronomers have identified 88 constellations and many of them represent characters from Greek and Roman mythology.
For example, the name Hydra, the largest constellation, comes from the water snake monster killed by Hercules in ancient mythology. Some of the constellation names are in Latin; for example, Cygnus means Swan and Scorpius means Scorpion.