Science blog

Being little children we have dreams about whom are we going to be in their future. Though your dream was to fly into outer space, you chose to keep your feet on the ground and let your mind wonder and research. Being attentive, hard-working, intelligent and efficient you have every right to call yourself a scholar, but first of all you are to prove it to the others. A scholar is a scientist researching the field of his interest and contributing to it. A scholar is doing a vital job: getting to the essence of things and makes an explanation, an outline, readable and understandable for the colleagues and interested individuals. Excellently written dissertation thesis is not enough to call oneself a bright scholar, for your research may be covered with dust and buried under a pile of similar works. You have to be genuinely interested in what you are doing and get some of your writing into your head for further research. If you want your masters thesis to be read and forgotten you may formulate your thesis statement in a “keep it simple” kind of way. You won’t have to worry about your thesis drawing attention. But if you are concerned to show a completely new approach, or state a new point of view or you got luck and made an important discovery, your work can be published by mass media and bring you success. Top priority for every scholar is to help humans live in comfort, keep them informed and provide them with everything necessary for fair development and success. You are to create authority to communicate with other scholars on friendly terms and assist each other in doing research. A scholar is never tired to investigate and try, experiment and risk. It can take years to come to a conclusion or a discovery, which, by the way, may turn out to be false eventually. A true scholar never gives up trying to find out the truth. Motivators are fame, recognition and a fortune if your discovery brings stable income. That is practically all, what ambitious people need in their lives. There is nothing more awarding than respect in your family, acclaim among colleagues, financial freedom and a bookshelf full of your editions that will make you famous forever.

Sound in brief but remarkeable terms is a vibration, that our ears percieve by the sense of hearing. Most commonly vibrations travel to our ears via the air. The ear then converts these sound waves into nerve impulses that are sent to our brains, where the impulses become sound. To say all that in a more technical language: Sound "is an alternation in pressure, particle displacement, or particle velocity propagated in an elastic material" (Olson 1957). Sound is also a series of mechanical compressions and rarefactions or longitudinal waves that successively propagate through media that are at least a little compressible. What causes sound waves is known as "the source of waves". Examples of sounds sources is: A violin string that vibrates upon being bowed or plucked. The four characteristics of sound are frequency, wavelength, amplitude and velocity. The frequency of sound is the number of air pressure oscillations per second at a fixed point occupied by a sound wave. The amplitude is the magnitude of sound pressure change within the wave. Basically this is the maximum amount of pressure at any point in the sound wave. A sound wave is caused literally by increases in pressure at certain points causing a "domino effect" outward, the higher pressure points are the crests in a sound wave, and behind them are low pressure points which tail them. These are known as the troughs on a wavelength graph. Sound's propagation Velocity depends largely on the type, temperature and pressure of the medium through which it propagates. Because air is nearly a perfect gas, the speed of sound does not depend on air pressure. The frequency range of sound that is audible to humans is approx. between 20 and 20,000 Hz. This range of course varies between individuals, and goes down as are age increases. Sounds will begin to damage our ears at 85 dBSPL and sounds above approximately 130 dBSPL will cause pain, as a result are known as the: "threshold of pain". Of course again this range will vary among individuals and will change with age.

Many parents may admit math was not their favorite subject in high school. Many may also admit that math now plays an important role in their lives and careers-and will be necessary for their own children's futures. According to the Bureau of Labor Statistics, by 2014, 6.3 million jobs will require science, engineering or technical training-24 percent more than in 2004. These statistics show that today's middle and high school students will need a strong math background to be competitive in the job market. Spending time with teens to make math relevant to them now can help them build strong math competencies to achieve success later. So how can parents engage their teens in math-focused activities that both can enjoy? Here are tips to help parents capture their teens' and preteens' interest and make math matter in many ways, through encouragement, entertainment and empowerment. Make It Real Leading by example is a powerful influencer. Showing how math is used everyday can help teens understand its importance to their every day lives outside of the classroom. Are you cooking dinner tonight? Have your teen measure out the ingredients and ask questions on measurements if a recipe was doubled. Need to pay the bills? Have them do the math to calculate balances and budgets. Ready to purchase your teen's first car? Sit down with him or her to figure out financing, insurance rates, monthly gas expenses and maintenance costs. Turn On The Television Use examples from TV and movies to show how math can be entertaining and exciting. One program that mixes entertainment with education is "We All Use Math Every Day™," which provides free lessons based on the math used to solve crimes in CBS' hit series "NUMB3RS" on Friday nights. More than 28,000 teachers around the nation have signed up for this program for high school students developed by Texas Instruments in partnership with CBS and in association with the National Council for Teachers of Mathematics (NCTM). Order a pizza, tune into the show with your teen, and discuss how math helped solve the crimes to make a Friday TV night that's both fun and educational. If your child's teachers aren't using the classroom activities, encourage them to do so. Visit www.cbs.com/ numb3rs for details, as well as more parenting tips from education experts. Take A Trip Many popular tourist attractions also help stimulate young minds. When traveling on a family vacation or simply exploring the sights in your own town, visit math and science exhibits in museums, learning centers, colleges or zoos to show how math relates to teens' interests and hobbies. When on vacation, ask your teen to create the day's agenda, calculate the shortest walking or driving routes to visit the attractions, or figure out currency exchange rates. Test The "Truth" Beyond balancing a checkbook, math teaches analytical and problem-solving skills that are necessary throughout life. Showing teens how to challenge what they are told by analyzing facts and figures in the media and on the Internet will teach them to test statements and think beyond conventional wisdom. Go through the newspaper or online news sites and discuss articles or current issues of interest to your teen. Challenge them to re-create the statistics used to support each side of a debate, or to double-check the charts and graphs for accuracy. Take the Maximum Helping teens plan their math education early on can make an impact on their educational and career opportunities later in life. The requirement for a strong math background is no longer just for engineers and scientists, and parents must plan ahead to ensure that their teens are prepared, no matter what career they choose. Just like English and reading, math coursework builds on concepts learned in earlier grades. Teens need to take a math class every year from middle school through graduation to ensure the most opportunities remain open to them later in life. Know what math courses the schools offer and encourage teens to take classes that challenge them every year, regardless of their school's minimum requirements. By working with teens to show how math is relevant every day, parents can help ensure their children's personal and professional success in the future.

Getting kids interested in science at an early age is very important. It's easier than you think. Science does not have to be something mysterious. It is happening all around us, and you can use everyday things to encourage your children's interest and knowledge. Most parents believe that they can't help their children with science. But you don't need a advanced scientific degree to teach young children science. All you need is a willingness to try, to observe the world, and to take the time to encourage their natural curiosity. You can help by having a positive attitude toward science yourself. Then start simply by asking your child questions about the things you see every day. Why do you think that happened? How do you think that works? And then listen to their answer without judging it or judging them. Listening without judging will improve their confidence, and help you determine just what your child does or does not know. You can turn every day activities into science projects. For example, don't just comment on how bright the moon is one night. Ask questions about why it's brighter tonight, why does it change shape, etc. You can observe the moon's phases throughout a month, and turn that activity into a science project, without even mentioning the words "science project". For a child that likes cooking, observe how milk curdles when you add vinegar, or how sugar melts into syrup. Try baking a cake and asking why does the cake rise? What happens if you forget to put in some ingredient? Voila! Instant science project idea, without being intimidating to you or your child. Different kids have different interests so they need different kinds of science projects. A rock collection may interest your young daughter but your older son may need something more involved. Fortunately, it's not hard to find plenty of fun projects. Knowing your child is the best way to find enjoyable learning activities. Here are some more tips: - Choose activities that are the right level of difficulty - not too easy nor too hard. If you are not sure, pick something easier since you don't want to discourage a child by making science frustrating. You can always do the harder project later on. - Read the suggested ages on any projects, books or toys labels, but then make sure that the activity is appropriate for your child, regardless of age. Your child's interest and abilities are unique. If a child interested in a topic,they may be able to do activities normally done by older kids, while a child who is not interested may need something easier aimed at a younger ages. - Consider how well the type of project matches your child's personality and learning style. Is the project meant to be done alone or in a group? Will it require adult help or supervision? - Choose activities matched to your environment. A city full of bright lights at night may not be the best place to study the stars. But during your vacation to a remote area, you may be able to spark an interest in astronomy. - Let your child help choose the project or activity. It's easy enough to ask. Rather than overwhelm them, suggest 2 or 3 possibilities. When a child picks something they are interested in, they will enjoy it and learn more from it. Go ahead. Try it and see for yourself how easy it is the spark the interest of a child.