Why Are Metals Good Conductors?

Different metals are often employed for various applications because they are known for being good conductors of both heat and electricity. All of the appliances that we find in our homes and workplaces, such as kettles and computers, use metal for one reason or another. But why are they such good conductors? How does it all work?

Generally, atoms will tightly hold onto their electrons, not allowing them to move very much (if at all). In metal, however, atoms hold onto their electrons more loosely, allowing some of them to even be free moving. This is because the electrons form a metallic bond of sorts with each other, creating a moving sea vibrating electrons. They drift aimlessly through the metal, helping to give it it’s various properties, including strength.

Electrical conductivity

This term refers to a metal’s ability to conduct an electrical current, such as in a refrigerator or television. The outer electrons of the atoms are loosely bonded and are free to move through the material. When an electrical current is applied to a metal, it causes the free moving electrons to flow, which allows the current to pass through and be moved on.

Thermal conductivity

This term, on the other hand, refers to a metal’s ability to conduct heat, such as in a toaster or heater. The electrons nearest the heat source begin to warm up, causing them to vibrate fairly fast. In colliding with the cooler, slower moving electrons around them, the hot electrons transmit this heat energy on. Metal is such a good conductor of heat because their electrons are packed so closely together, allowing the vibrations to be passed on very quickly.

Metals are quite often cool to the touch, causing many people to believe that they are actually good conductors of cold, not heat. This, however, is a common misconception – metals are able to quickly absorb heat from their surfaces, including from human skin. It is this loss of heat that causes metal surfaces to feel cold underneath our hands.

When people ask why metals are good conductors of both heat and electricity, the short answer is because of the way their electrons are able to freely move around. To fully get into the specifics of how each element is effectively conducted by different alloys, you would probably have to attend physics classes in order to understand the processes. Having a basic understanding, however, should be enough to show why metal is so useful.

What Causes Yeast Infections in Women – 3 Things That Will Shock You

What causes yeast infections in women? The answer may surprise you. This is one of the most common health issues that women experience. Tens of thousands of women are treated by doctors for this uncomfortable and embarrassing condition every day.

Yeast infections know no bounds of race, age, or geographic location. Any woman is susceptible to them. While there are a lucky few who are never bothered by this problem, most women will experience at least one yeast infection on their lives.

Once you learn what causes them, you’ll have a better idea of how they can be prevented.

1. Yeast infections can happen anywhere on your body. While the vagina is the most common location for these infections in women, problems can also happen in the blood, on the skin, and in the mouth. Dark, wet, and damp conditions cause yeast infections, so places on or in your body that have these conditions are breeding grounds for yeast.

In the blood, these infections manifest themselves as such things as PMS, depression, arthritis, and ADHD. On the skin, yeast causes rashes, and in the mouth, it causes thrush. Babies who get diaper rash are suffering from yeast infections (after all, a wet diaper is the perfect place for yeast spores to grow).

Eliminate these conditions, and you’ll be putting up a strong barrier against yeast.

2. Sugar feeds yeast. People who eat sugary diets are prime candidates for yeast infections. If you don’t consume a lot of sugar, it’s unlikely yeast will grow into much of a problem, even if you’re exposed to it. However, the more cookies and cake you eat, the worse your infection will become.

3. Yeast can be sexually transmitted. Men can be contaminated with yeast, but not have any symptoms. They can then pass it to their sexual partners without knowing it. The women get yeast, and pass it back to their partners in turn, creating a never-ending cycle of   transmission .

Attacking yeast at its roots is the best way to get rid of it for good. Even if you keep your body clean and dry, avoid sugar, and have protected sex, if you’ve already had an infection in your life, the yeast could still be there, lying dormant.

You’ve got to kill it all to ensure it won’t come back. There is a way to do this, and it’s safe and natural. Learning what causes yeast infections in women is easy, and getting rid of them for good can be easy as well, if you know what to do.

5 Daily Habits That May Shorten Your Life Span

The human body is considered as the greatest wonder. You are the person who is responsible for habits that may shorten your life span. No one else is to blame. The body of the humans is believed to be built for living more than a century, but the present situation shows that only the half of that can be taken as an average life span. The life span is shortened mainly due to the habits developed by the humans. Those habits can harm the whole system adversely. Any habit will take a fixed period of time to turn into a regular pattern. Avoiding the habits which are harmful is not such a Herculean task. So it is high time you reclaim the control of your life and live. There are mainly five habits that shorten your life span and that should be avoided.

Unbalanced Diet

You take in food to provide your body with the necessary nutrients which are inevitable for the proper working of the various systems of the human body. But think once more, do your diet has all the essential nutrients? If your body is not getting the vital nutrients it will not function properly. This is sure to shorten your life span considerably.

Drugs

Taking in drugs and toxic substances is another grave problem. Alcohol and such other intoxicating substances are silent killers of your body organs. Alcohol can cause damage to you heart, liver and such other vital organs. The effect of cardiac and liver problems is well known to every one. Thus the intake of intoxicating substances can shorten your life span dramatically. Not just that, these substances can make the living period itself as painful as hell.

Tobacco

Tobacco also comes under the category of toxic substances. It can destroy the cells in the lungs. Smoking is a major cause of cancer around the world. Chewing of tobacco and other like substances can cause mouth cancer. Once you are affected by these diseases, it will be a great distress not only for you but for the people closer to you also. Smoking is a huge factor that shortens your life span.

Stress

The busy life has a very bad level of stress. Stress has a lot to do with the health of a person. The life of a person can be worth living only if his mind and body work in perfect harmony. The mental breakdown is one of the main reasons which leads people to the habits of alcohol consumption, drugs and smoking. Avoiding stress can work wonders in one’s life. Stress is the sure by-product of this ultra modern era, but there are ways to avoid it. It should be avoided. Otherwise you will be the hunt of many diseases and your life span will also be affected.

Lack of Exercise

With the development of technology the human body is having very less workout. The adverse effects of having less or even zero exercise is very disturbing. If your body is not getting enough exercise, the calories taken in will get deposited in different parts of your body. These unwanted fat deposits will eventually cause health problems

The Best Investment Funds for 2014 and Beyond?

Here we go one step beyond the basics and suggest that the best investment funds for 2014 and beyond could be funds that invest money in alternative investments. You can debate whether diversified stock funds or bond funds will be the best funds to invest money in, but your best investment could be funds that invest money in alternative investments like gold, oil, and maybe even real estate stocks.

Informed investors know that you should invest money in more than one area in order to have a diversified portfolio. Most investors think that the best investment strategy is to own the best funds, and that your only choices are diversified stock funds and bond funds. Few have a handle on the arena called “alternative investments”. Where do you think the smart investors will invest money when neither stocks (in general) nor bonds look attractive and safe investments are paying record low interest rates?

The top dogs look around for opportunities that are “outside of the box” in search of their best investment alternatives. Welcome to the world of alternative investments. As an average investor trying to find the best funds you might want to broaden your horizons as well. If our economy continues to be lackluster and interest rates rise in 2014 and beyond both diversified stock funds and bond funds could take a hit. So, where can you invest money for higher returns if things turn sour in 2014 and/or 2015?

Gold is not cheap anymore but it is well below its highs as I write this. Gold funds invest money in stocks in the gold and silver mining industry, and they took a major hit in 2013. Historically, gold has been one of the best investment alternatives in times of high uncertainty and crisis. Gold funds might be one of the best funds if things get ugly in 2014 and beyond. They may or may not be your best investment, but adding them to your portfolio at this time to add more diversification could be a good idea just in case.

Another alternative investment that’s a candidate for best investment ideas: oil and other natural resources. Your best funds to invest money in here and keep things simple are called natural resources funds. They too have proven to be good performers when the stock market in general is having a rough time. You might think that gasoline prices at the pump (and oil prices) are high now, but think back a few years. Prices can always go higher, even in a bad economy.

And then there’s real estate as an alternative investment. This industry has recovered from the financial crisis lows, in no small part due to low interest rates. What will happen if rates climb as the economy sputters? Investors usually invest money in real estate with borrowed money. The truth of the matter is that interest rates are still low by historical standards. Real estate funds can be one of your best investment alternatives as investors rush in to buy before rates climb further. The best funds here invest money in real estate investment trusts and other companies in the real estate sector, like home builders. Caution: when rates rise significantly the real estate industry can sputter.

Why do I suggest that the best funds in 2014 and beyond could be those that invest money in specialized sectors like gold, natural resources and perhaps real estate? Historically, in bad times for the economy and stock market in general these industries can attract money as investors search for the best investment alternatives to invest money in. Both stocks (in general) and bonds are selling near historical highs. Bonds have been on a thirty year roll, and stocks have climbed 150% in less than five years. Neither looks cheap by any standard.

In your search for the best investment alternatives to make your money grow, sometimes you need to look outside of the box. You need to invest money so that some of it is safe and available for future opportunities. And in times like 2014 and beyond it’s a good idea to further diversify into alternative investments. The simplest and best investment vehicle for the average investor is mutual funds. The best funds to add to your portfolio are those that can swim against the tide when it goes out.

The Basics Of Avian Flu

Bird flu or avian flu is an influenza virus type that normally infects birds. However, it can also infect other animals including pigs. Wild birds are natural hosts to the virus and normally don’t get sick from it. But domestic animals such as chickens and turkeys could be severely affected. Humans, on the other hand, can be infected with influenza types A, B, and

C.

Genetic changes and sharing can occur under certain circumstances. This could happen in crowded conditions where poultry, pigs, and people live in close quarters. This change could allow a virus to turn into more infectious to humans. This could also mean that the virus can more easily transmitted from person to person. This is precisely when a pandemic could break out.

The avian flu’s jump to humans was first detected in 1997. Though there have been around 60 human deaths reported, they have been due to transmission from animals to humans. Migratory birds have been detected with the virus and these cannot be caught and killed – these birds have alreadd carried the virus to Europe and Africa. It is difficult to predict when the pandemic could break out – It all depends on when that genetic shift (from birds to humans) takes place.

For now, there has been no detection of this virus in the U.S. It is however possible for travelers to be infected, but most of cases in humans have been in those with closer contact to birds than a casual traveler has. Since the infection occurs via fecal-oral route, people are advised to reduce their risk while traveling by avoiding bird markets, zoos, and areas in parks, where there could be high concentrations of bird feces.

Countries that are the most vulnerable to this flu are Indonesia, Vietnam, and Cambodia, due to their high concentration of bird markets. Other areas include Thailand, China (south and north), Tibet, Kazakhstan, Russia and

Mongolia.

Symptoms of bird flu in humans have ranged from typical flu-like symptoms (fever, cough, sore throat, muscle aches) to eye infections and pneumonia. If you feel you’ve been exposed, there are a couple of treatment recommendations available today that you may want to discuss with your doctor. Until these are tested in a pandemic, however, their true efficacy is unknown. There are currently no vaccines available, but many companies are working on them.

More information on Avian Flu and preventive measures can be had from Avian Flu Protection [http://www.avianfluprotection.org.uk].

Homework Organization For Students (And Their Parents)

I spend a lot of time at my seminars and workshops, on the phone and via email discussing the subject of homework organization. Actually, I spend a lot of time listening to parents complain that their children’s homework disorganization is driving everybody crazy!

Many students have such a hard time getting it together that by the time they finally sit down to do their homework, they are exhausted. No wonder they don’t want to do it! Getting organized will help alleviate exhaustion, bad attitudes, procrastination and rebelliousness.

Homework organization just makes life easier for everyone.

These are the homework organization tips that I use as a student, teacher and parent. Print this list and read it with your children. Then, post it on the fridge and refer to it often so that everybody (parents, kids, babysitters, grandparents) will be on the same organized page.

At School:

  • Write down every, single homework assignment in one place. I strongly recommend using a bound or wire notebook- definitely NOT a loose leaf binder. I don’t care how careful you are, pages will fall out, and then what? You won’t know what to do nor when to do it! A plain notebook is fine, but a datebook or calendar is the best. Some schools even provide these to students. Use it.
  • Write down homework assignments as you get them. This is mostly for older students that change classes and teachers, but it is a good habit for everyone. If the teacher says, “Oh, tonight I want you to read Chapter 4,” write that down in your notebook.
  • Write down every, single due date for a project or paper- even if you have a handout or syllabus. Handouts disappear (I think they hang out with loose socks), but you will still know what to do and when to do it if you have everything written down in your homework notebook.
  • Keep ALL of the day’s homework assignments together in one place. Don’t have a special place or page for math, another for writing, etc. You want to see everything in one spot.
  • Check your homework notebook Three (3) Times A Day: Before you leave school (or each class), double check to make certain that you have everything (books, paper, materials, etc.) that you will need later.

At Home:

  • Before you start doing your homework, look at your notebook and make sure that you are doing the right assignment, the right page, etc.
  • Before you put everything away, take one more quick look. Did you do everything? Good!
  • Make a decision about where you will put your completed homework: into a binder pocket, a special homework folder, etc. You may decide to have a color-coded folder for each class. If you choose to use folders, I strongly recommend using 3-hole punched folders and keeping them together in a 3-ring binder. Whatever you choose, stick to it! Don’t put your homework in your a binder today, a folder tomorrow… And, never, ever fold your homework into a book or throw it loose into your backpack! Shudder!
  • Use your Magic Homework Box. You do have one, don’t you? The Magic Homework Box is a box with all of the homework supplies and materials a student needs on a regular basis. These supplies only come out of the Magic Homework Box during homework time, so you always have what you need. Now, that’s magic!
  • Clean up as soon as you are finished with your homework. Now, not later! Put completed pages in your homework folder, then put the folder and homework notebook in your backpack. Not only will mornings will be less crazy, you won’t have to sit in class knowing that you did your homework and forgot it at home (doh!). Don’t forget to put away the dictionary and any other books you may have used.
  • Remember to put everything back into your Magic Homework Box. In my house, homework is not “done” until everything is cleaned up and put away.
  • Keep your backpack organized. Throw away all of those candy wrappers and random pieces of paper. Keep one area or pocket filled with a few items (pencils, a sharpener, maybe a calculator) so that you can do your homework anywhere- maybe even before you get home! Remove any graded test, project, report or paper that your teacher has taken the time to return to you. Why? You might need it to study for a test, for a portfolio or for a project. You can throw everything away at the end of the semester or the school year, but until then put each item in its own subject file, but NOT in the homework folder. Remember, homework folders are ONLY for completed homework that is ready to be turned in!
  • Don’t give up! They say it takes 21 days to form a good habit. If you forget to do something on this list, don’t stop trying. Hey, maybe if you remember to write down all of your homework or clean up for 21 days in a row, your mom or dad will do something extra nice for you! (Parents, that was a hint!)

A Note to Parents about Homework Organization

Please remember that your job is to give your children organizational tools and show them how to use them. Your job is NOT to organize your child’s homework! So, in the beginning, you might check your son’s homework notebook to make sure that he is writing down all of his assignments in one place, but you would never dream of calling the teacher and checking. You might watch as your daughter copies the science project due dates into her homework notebook; you will not do it for her.

Yes, I know that it is hard to let go- I’ve been there! But, we want our children to be organized and independent learners, right?

You can do it!

(For more information about recommended homework organization products and The Magic Homework Box, please see site information below.)

An Introduction To Birth Control

The dictionary defines birth control as “a regimen of one or more actions, devices, or medications followed in order to deliberately prevent or reduce the likelihood of a woman becoming pregnant.” Birth control has become imperative in today’s world, due to the global rise in population, need for family planning and also to safeguard oneself from unwanted pregnancy.

There are various methods of birth control that one can adopt, including the withdrawal method, or coitus interruptus; barrier methods like condom, diaphragm, cervical cap or contraceptive sponge; chemical methods like contraceptive pills, contraceptive patch, or the progesterone-only pill (POP); intrauterine methods; fertility awareness methods and more. Other than the preventive methods, one can also adopt abortion methods like surgical abortions, chemical abortions and herbal abortifacients to end unwanted pregnancies. Some permanent birth control solutions are surgical sterilization, which includes tubal ligation for women and vasectomy for men.

Although there are many alternate methods of birth control available in the market, the most commonly used methods are contraceptive pills and condoms. Contraceptive pills or oral contraceptives consist of a pill with doses of synthetic hormones like progestin or estrogen, taken orally by a woman to prevent pregnancy. The contraceptive pills are considered to be a reliable mode of preventing pregnancy, but can sometimes also result in certain side effects like obesity, headaches or depression in some women. Condoms were traditionally manufactured for men but now are available for female users. Condoms serve a dual function, as they not only help in avoiding pregnancy but also prevent sexually transmitted diseases like HIV/AIDS.

In Canada and the US, contraceptive patches are also fast gaining popularity. A woman applies contraceptive patches on her skin for a week, and they release synthetic hormones to prevent pregnancy. They act in the same manner as contraceptive pills. Contraceptive patches in Canada and US are sold under the brand name Ortho Evra, and are sold only by prescription.

With the advances in science and technology, we might witness new innovations in birth control methods; however, in order to choose the right mode of birth control one must consult one’s doctor.

9 Fun Speech Class Activities

Speech classes are a lot more fun when everyone gets involved with special activities! Try some of these ideas to warm up your next class:

  1. Impromptu speaking. Give students various topics for them to speak on without any preparation. The topics should be relatively easy at first, such as “What is your favorite movie and why?” or “If you could only eat one food for a month, what would that be?”
  2. Lost on a deserted Island game. Present the scenario: Following a ship wreck, the entire class has been stranded on a deserted island. Each person is allowed to bring one object to the island. Have each student describe what that object would be and why. (You can extend this into a team-building activity by breaking into teams and have each team figure out how to creatively combine their items to increase survival).
  3. Tongue Twisters competition. Have two people come up at a time and take turns repeating a tongue twister. “unique New York” “Red Leather, yellow leather.” Faster, and faster. When someone messes up, they sit down and a challenger comes up. Someone can keep score with the class roster.
  4. Dramatic alphabet or numbers. Students can “lecture” the class by reciting the alphabet or counting to 30, but with gestures, drama and eye contact. A, BCD! E, F, G… , H? I, JKL-M… , etc.. You could emphasize the eye contact by adding this activity: the speaker is to make and hold eye contact for at least 3 seconds per person. All the students raise their hands. When the speaker initiates eye contact with someone, that person mentally counts to 3 and then lowers his or her hand, letting the speaker know that the 3 seconds is up. The speaker can then move onto someone else. You could even make it a competition.
  5. Dramatic reading. You, of course, could pick an intriguing passage, or you could do something like having them read definitions outloud, just to make it silly by being dramatic.
  6. Transitions exercise. Pass out 3 slips of paper to each of the students-and have some categories written on the board. (Places, People around the school, Foods, TV shows). Ask that each student pick 3 of the categories and write a word that falls into that category. Then collect the slips in a container. Each student goes up to the front of the room in turn and picks a slip and starts talking about whatever is on that slip. Then, after a little bit of time, you pick another slip for the student and say, “OK, Amanda, your next topic is… ” and then the student’s job is to transition from the one topic to the next. It’s OK for the audience to help. It’s OK to offer another topic if the student is stuck. Using “apples” and “New York City” as examples, transitions can be phrases such as: Now that I’ve told you about the health benefits of apples, let me tell you about the health benefits of living in New York City. Finally, let me tell you how New York came to be called the Big Apple.
  7. On the other hand. Have 2 students come up. Ask one student to speak “for” a topic and then the other person to speak “against” the same topic.
  8. One word story. Line up 7-10 students in front (actually it’s better if they stand in a circle) and have them tell a non-rehearsed, non-thought out story one word at a time, cycling to the beginning until the story comes to a somewhat logical conclusion. The key is that each person can only say one word at time and this includes the boring words like “and” and “the.” You could start the story by saying something like, “One.” (The logical thing to come next would be “day,” but it certainly could be something else).
  9. Sell a product. Have odd objects for students to “sell” to their classmates. You can introduce the FAB format and ask them to use it. F=Features, A=Advantages, B=Benefits. The focus should be on the benefits. Toilet paper, anyone?

Add a few fun activities and see the interest level soar in your class!

How to Calculate Window Tint Visible Light Transmission (VLT)

Window tinting films are measured in visible light transmission levels (or VLT). This means that when we discuss a particular film, be it for fitting to a car or any other application, we normally refer to it with it’s VLT value. VLT is measured in percentage ( % ), so if you hear about a tint product being referred to as a percentage, it is the VLT that defines that percentage value.

For example, a tinting film referred to as Charcoal 5% is a charcoal coloured tint with a VLT of 5% and likewise a film referred to as green 50% is a green coloured tint film with a VLT of 50%. But what does the number actually mean?

Well, in simple terms the VLT value is the percentage of visible light that will be allowed to travel through the window tinting film from the exterior face side of the film to the interior side. This means that a 5% film will only allow 5% light travel through and a 70% film will allow 70% light to travel. In effect, this means that lower VLT films will appear darker. For instance, it is normally 5% tints that we will see on limousines for privacy.

So, fitting a 5% tint to a window will allow 5% light to travel through the glass from outside to inside, right? NO! Because we need to take into consideration the actual VLT of the window before the tint is even installed. There is no such thing as a piece of glass, no matter how clear it appears, with a VLT of 100%. This is because glass naturally filters out a little bit of visible light.

Lets look at car window tinting as this is one area where we speak of VLT often due to the fact that many countries have laws in place limiting how dark car windows should be tinted. Most modern cars come from factory with windows reading a VLT somewhere between 72% and 78%, depending on manufacturer, model and country. Say, our example car’s windows read at 72% and we add a 50% window tinting film, what is the new and final VLT of our car’s windows after installation?

The sum is very simple: V1 x V2 = V3 (Where V1 is the original VLT of the glass before tinting, V2 is the VLT of the window tinting film and V3 is the final VLT value of the glass with tint film applied).

Our car’s windows original VLT = 72% and the tint = 50 %, thus V1 = 72 and V2 = 50

The sum is 72 x 0.50 giving us 36, which we will express as a percentage. So a window with an original VLT of 72% will then have a VLT of 36% after application of a 50% film.