Posts filed under 'Internet Science Resources'
As organic based fuels turn out to be much more scarce, scientists are pushing for the research and development of green alternative fuel. A plethora of potential energy sources have been suggested: wind, solar, water, and nuclear to name a few. Although they are organic, not all are obtainable globally 24/7. There is one more choice, one that is perpetual and discovered directly under our feet: geothermal power.
The effects of coal and petroleum have left a sour taste in humanities mouth, which now seeks to discover power that is cheap, renewable, and ecologically friendly. Despite using the sun, wind, water and nuclear energy for electricity, there is stil one natural resource that has yet to become harnessed. 1 that’s inexpensive, abundant, and effective: geothermal energy.
In order to fully comprehend why geothermal energy is so essential, here is a broken down explanation.
What Precisely Is Geothermal Power?
Geothermal power (literally heat from the earth in Greek), is a phenomena caused by the constant decay of minerals in the earth, absorption of the sun’s rays, and also the radiating heat from the Earth’s core, with a temperature of about 9,000 degrees Fahrenheit. Simply because of this, it’s perpetual and is found almost everywhere in the world.
How Does it Work?
In order to produce electrical power, the real energy source used in homes and offices, turbines require to become spun at power plants which charge a generator. Water and wind directly charge the generator while sun and nuclear power indirectly turn them through steam. With geothermal power, heat taken from rocks and hot springs radiates through turbines with steam. Normally, most geothermal plants harness energy via heated water. However, new technology is being produced that can harness thermal power directly from magma and with water can flash create steam to spin turbines.
Efficiency?
According to the United States’ University of Florida, Hawaii, the island state west of California, has 1 geothermal plant which produces about 25 megawatts of energy for about 5 cents per watt. In total; one geothermal plant accounts for about 1/4 from the entire states electrical power. 1 geothermal plant accounts for the same power as roughly three nuclear plants. This is simply because geothermal energy is run 24/7 unlike nuclear plants which spend time switching fuel rods and shutting off the core each night.
Abundance?
Wherever there’s earth, there is geothermal energy. However, land near tectonic plates, where volcanos, earthquakes, and geysers are discovered, are the easiest places to extract heat. The only thing this means is thermal plants not in these areas must dig deeper to access much more heat.
Environmental Effects?
The only waste created is going to be heat; not so bad! Also, geothermal power plants are smaller than most, reducing visual pollution and preventing sights like “wind vane forests”.
So there you have it. Geothermal Energy provides promising gains for humanity. With the efficiency of nuclear power without the waste or visual pollution, it offers the greatest gains of any from the alternative fuels.
Find out much more information about Geothermal Energy
August 20th, 2010
You should also position your wind generator at an open space, unblocked from high buildings or trees. Most of the materials required to build your wind generator or wind turbine are easily available at the local neighborhood hardware store, amongst which you will need a motor, wiring, tower, blades, rotor, hub battery backup, tail and body assembly. Ensure that your blades are about 5 feet long so as to capture the optimal amount of wind power. All the materials add up to less than 100 dollars.
Continue Reading July 26th, 2010
Algebra - what is it?
It is an domain of mathematics that use letters in replacement of numbers to derive results for a given situation. It is this abstraction that often scares many and shudders some. Algebra topics extend from working with equations to factoring binomials all the way to finding the y-intercept. In most cases, just as in any other mathematics associated class, students start off by adding, subtracting and simplifying algebraic expressions . later on, they would move on to more advanced stages of solving algebraic equations using the least common multiples and converting fractions in to decimals .
Oh no! It’s Exponents, Radicals and Graphing
There are many another advanced topics. To start off with there are exponents. An exponent is the small number placed to the right and slightly above a number or algebraic expression. In this example (x + y)3 where the 3 is the power and refers the power to which that number is exponentiated. The above algebraic expression is read, x plus y to the third power. In working with exponents you can add, subtract, multiple or divide them. You can work with fractional and negative exponents. If that isn’t enough to make your head spin, then you can move on to radicals. A radical, in simple terms, is the undoing of an exponent. The V beside 4 denote a radical expression which means, the square root of 4, which equals 2. The inverse of “V” symbol is “^” which denotes that the number it refers to is a multiple of the principle number. Therefore, 2^2 which is read as 2 to the 2nd power, equals 4. As with exponents, radical expressions can be added, subtracted, multiplied and divided. Radicals can be switched into powers and exponents back into radicals. If powers and radicals aren’t enough, there is always graphing. Start with graphing straight lines and finding if the line is horizontal or vertical or something else. Does the line have an x-intercept or a y-intercept? Can you find the slope of the line? Once you master graphing lines, a whole world of circles, parabolas and hyperbolas awaits you!
Help is Available
If you are learning algebra and this all seems a little too much, don’t fret. Did you know that there are many resources out there that can help you master fractional inequalities, quadratic formulas and polynomials. The tradition is to decide on a math tutor, but the cutting-edge algebraic software are no different. In fact, they are as good as math tutors. You can also use algebra calculators or algebra solvers. any of these tools can assist you become an algebra expert in no time.
June 4th, 2010
Let’s Explore Algebra
Algebra is a wide category of mathematics that uses abstraction by substituting letters for numbers. This abstraction is the very reason why most individuals find algebra scary and too difficult to handle and it is the same reasons why some pupils find it fun to play around with. topics of algebra range from working with fractions to factoring binomials all the way to finding the inverse of a matrix. In nearly all cases, just as in any other math related class, students start by adding, subtracting and simplifying algebraic expressions. later on, they would move on to more advanced stages of solving algebraic equations using the greatest common factors and converting fractions in to decimals.
Exponents and Radicals and Graphing Oh My!
There are many another advanced themes. To start off with there are exponents. An exponent is the tiny number placed to the right and slightly above a number or algebraic expression. In this example (x + y)3 where the 3 is the exponent and denotes the power to which that number is raised. The above algebraic expression is read, x plus y to the third power. In working with exponents you can add, subtract, multiple or divide them. If you pick up the basics, you will soon start working with rational and negative powers and if you think those are not challenging enough, hopefully radicals will spin your head. A radical, in simple terms, is the undoing of an power. Radical expressions are shown by the symbol “V” and when placed next to number 4, it is read as square root of 4, which is equal to 2. The inverse of “V” symbol is “^” which denotes that the number it refers to is a multiple of the principle number. Therefore, 2^2 which is read as 2 to the 2nd power, equals 4. Equally with exponents, radical expressions can be added, subtracted, multiplied and divided. Radicals can be switched into powers and powers back into roots. If powers and roots aren’t enough, there is always graphing. Start with graphing straight lines and deciding if the line is horizontal or vertical or something else. Does the line have an x-intercept or a y-intercept? Can you find the slope of the line? After you master graphing lines, a whole world of circles, parabolas and hyperbolas awaits you!
Want Help?
While you are learning algebra if the terms and concepts seem too much to handle, relax and take a break. There are many resources out there that can help you master radical systems of inequalities, quadratic formulas and polynomials. Look for math tutors or software applications that will walk you through step-by-step process on how to solve any problem. Know that frustration is not your only friend because any of these tools can help you become an algebra expert in very little time.
May 13th, 2010
We can say that Algebra is the core of math. An in depth knowledge of algebra and its basics is required before you could work on other mathematical problems. Deriving the answer for the product of 223 and 112 is quite easy if you use a computer. But when it comes to exponential (e) of 223 and logarithmic (log) of 112 then obviously, you will need some kind of algebraic estimator or algebra problem solver. Graphing a circle will be easy for this given formula X2 + Y2 = 4 but when it comes for an inequality like (X-2)2 + (Y-4)2 > 20 then it will be quite harder to plot the graph. In this situation algebra software can help you a lot since you only need to enter the inequality and graph will be plotted within no time. These packages can easily resolve any kind of algebraic, arithmetic and radical expressions of any kind of complexity.
Domain and Range of a Function
Now it is very easy to calculate the domain and range of functions like Y = X2, you can just tell that X and Y can take any real number from the X-Y plane but have you ever thought of defining the domain and range of log(tan 2x + sin 3x) = cosine(-4)(2x). But now you can solve such critical and complex problems with an algebra calculator without breaking sweat and you will also be getting all the steps as well
Coordinate Geometry
Now you can easily find the vertex and directrix and whether parabola opens up or down by just inserting the equation into algebra software. In addition, subtraction and multiplication of binomials, you are more likely to become drained because they require a lot of terms to be manipulated. However, by leaving the job up to algebra calculators, you will be able to get results within a shorter period with 100% accuracy. Similarly, algebra calculators can save the trouble for you in calculating matrices of 33 or 44 order or its reverse matrices.
So now you need not to start worrying when you see indices, rational numbers or exponential equations . Parabolas, hyperbolas or ellipses can all be easily graphed within computer algebra systems.
April 19th, 2010
River Birsch Trees are fairly easy to plant because they are fairly rugged and durable. Yet to plant or transplant them you do need to follow some basic guidelines. Two of the best cultivars or River Birch trees are Dura Heat and Heritage River Birches.
All people handling seedlings and small trees need to help with the life support of your plants. Seedlings are like fish out of water and need care which is often overlooked between the time the seedlings are lifted and transplanted. Improper care means higher mortality. Do not try and reinvent the wheel. You must protect seedling from moisture and temperature extremes, as well as physical damage. Seedlings are living and should be handled carefully. For a higher survival rate, treat trees carefully and plant them immediately. I like to have a backup plan for planting if the weather turns bad. I will sometimes switch from lining out the seedlings to potting them up if I realize that the soil conditions will not be right for an extended lenght of time. If planting must be delayed a few days, keep the plants in a cold, protected place with air circulation between the trees. Keep the trees out of the rain and wind. To check if the trees need water, feel the media at the roots.. If it isn’t damp, water the trees and allow the excess water to drain. In cool, damp weather, the biggest threat to these trees is from mold. Try to keep out of soil seedlings moist by either restricting water loss with a water vapor barrier or by wetting the roots at regular intervals. While handling or planting try to reduce temperature and air movement around the seedlings. Windy days can dry out seedlings so consider waiting for calmer weather. Once your soil conditions are correct OUR FREE USE PLANTERS will make planting a snap so its will be worth waiting for good planting conditions.
HOW TO PLANT
Ideal planting days are cool and cloudy with little or no wind. If possible, avoid planting on warm, windy days. The soil should be moist not wet. Care in planting is more important than speed. Make sure the roots are never allowed to become dry. Bare root seedlings should be carried in a waterproof bag or bucket with plenty of moist material packed around the roots to keep them damp. Ideally, bare root boxes should be kept refrigerated or packed in ice or snow. Don’t freeze the trees. Competition from weeds, grass, brush or other trees is very detrimental to survival and growth of seedlings. Choose areas free from this competition or clear at least a three-foot square bare spot before planting. Seedlings should not be planted under the crown of existing trees, or closer than 6 feet to existing brush. Avoid areas near walnut trees. Brush aside loose organic material such as leaves, grass, etc., from the planting spot to expose mineral soil. If organic matter gets into the planting hole, it can decompose and leave air spaces. Roots will dry out when they grow into these spaces. Open up the hole, making sure the hole is deep enough for the roots to be fully extended. If roots are curled or bunched up, the tree will not be able to take up water correctly, will often weaken and die, or may blow down later due to poor root structure. Take a tree out of your planting bag or bucket only after a hole is ready. When exposed, the fine roots can dry out in as little as 30 seconds. Seedling shoots and roots lose water to air, roots require more protecting.Unlike leaves ,they do not have stomata (closeable openings on the surface of the leaves) or any waxy coatings to help reduce water loss. If the roots apear dry they are probably dead. Now I know you are thinking,”I will place them in a buckect of water and store them there until planting”. This will not work. Submerge plants for no longer that a couple of minutes. Placing them in water cuts them off from oxygen. Remember to remove the container before planting a containerized tree. A helpful hint to all those new gardeners just starting is to remember to always plant green side up. Hold the seedling in place in the hole, making sure the roots are straight, fully extended and that the tree is neither too shallow or too deep in the hole. Fill hole, allowing soil to fall in around the roots. Tamp with hands or with your heel. Don’t crush the roots by jumping up and down around the seedling like there is a snake curled up around the seedling. It is delicate. Fill with more soil, if necessary, and tamp. Tamping is important. If soil is not firmly packed around the roots, there will be air pockets that can dry out the roots, and the seedlings may be weakly anchored. It is far easier to plant the tree strait up then have the tree leaning and have to adjust the tree later. (Addition of fertilizer and plant vitamins at the time of planting is not generally necessary.) Take your time in planting. Proper spacing will help you grow a more valuable crop. I have tried to get more production from a limited area by over planting and then thinning, but I always have had trouble in harvesting …. digging is slower and poor quality usually results for a portion of the crop. Avoid these tree planting errors:
Tangled roots Planting too shallow Planting too deep Air pockets Turned up roots (this is called J rooting) Planting trees that are not tolerant of wet soils in poorly drained areas Planting over rocks, septic tanks and leach fields, on sand mounds
CARE OF TREES FOLLOWING PLANTING Check periodically to be sure that brush, grass and other vegetation is kept under control by mowing, mulching, spraying or a combination of these treatments. Always obtain advice from a licensed pest control advisor before using chemicals. You ag extension agency may offer courses in application of chemicals. Monitoring the appearance of your trees will help you to detect signs of insects, diseases or other problems. Apperances also help sell your product. Look for foliage turning yellow, new foliage drooping or other signs of poor health. It is easier to take successful corrective action if the problem is detected early.
Over watering is a common problem in irrigated plantations. You probably won’t need to water more frequently than every 7-10 days. Give your trees a thorough, deep soak and then let the soil dry out before the next watering. This encourages the roots to grow down in search of water. Frequent, shallow watering encourages root growth near the surface and the trees are more dependent on irrigation and are less windfirm. Animals can be a major cause of damage to young trees. Porcupines, gophers, mice, rabbits, deer and cattle are the most frequent source of damage. In many states you may have to call your game commission and get their recomendations on legal methods to protect your crop. In our state, you can get help from the Pa. Game Commission to kill deer that are a threat to your seedlings or obtain a free fence to keep deer away from your seedlings. Over the years we have lost more trees to mice than any other animal. Put rat baits out on a regular basis. Over the years we have lost more seedlings and plants to mice than any other culprit including deer and rabbitts combined. You an see more articles about the care of trees plants and nursery stock at our web site http://www.seedlingsrus.com and http://www.highlandhillfarm.com
January 6th, 2010
Aesthetics: Unlike wind turbines, no one complains about the erection of solar panels on a rooftop. I have come across free plans online on how to build my own solar power grid but the info that you get is very vague and not to easy to read. I got to the point where free plans was not what I was looking for, than I started to buy different guides on how to make homemade electricity with a solar power grid, out of the 10 guides that I had purchased only
Continue Reading December 26th, 2009
Despite his leanings toward evolution and natural selection, French naturalist Comte de Buffon once wrote: “But no! It is certain, from revelation, that all animals have alike been favored with the grace of an act of direct creation, and that the first pair of every species issued full formed from the hands of the Creator.”
This type of disarming religious prejudice was common during his day, but he continually recurs to statements as to mutability which neutralize them. Buffon makes in the following statement a broad claim for nature as opposed to creation. He often wrote about the variation among many animals, and how changes of food, climate, and general surroundings influence both their forms and their habits. And yet he also stated:
“What cannot nature effect with such means at her disposal? She can do all except either create matter or destroy it. These two extremes of power the Deity has reserved for Himself only; creation and destruction are the action of His omnipotence. To alter and undo, to develop and renew–these are powers which He has handed over to the charge of nature.”
Here we have a claim for the power of nature in the modification of species which fully comes up to the requirements of the most advanced evolutionist. It is remarkable how clearly Buffon perceived the great factors so important for the evolution of organisms, rapid multiplication, great variability, and the struggle for existence. So despite the invocation of God, natural forces are not only acknowledged but embraced. How handy and convenient to bring a Deity in to cover your bases for evolutionary facts on the ground.
This internal dilemma in Buffon is now played out on the world stage in the evolution creationism controversy debate.
October 26th, 2009
It is safe to say that algebra is the core of mathematics. If you really want to know about mathematics and its basic principles then you should have a perfect and in depth knowledge of algebra. If someone asks you to derive the product of 223 and 112, you can easily do it manually or with a calculating machine. However, in a case where you need to work around the exponential of 223 and logarithm of 112, you will surely need an algebraic problem solver. Graphing a circle will be easy for this given formula X2 + Y2 = 4 but when it comes for an inequality like (X-2)2 + (Y-4)2 > 20 then it will be quite harder to plot the graph. In this situation algebra software package can help you a lot because once you enter the inequality in the program, the graph will get plotted automatically within very little time. These kinds of software systems can very easily solve any kind of algebraic, arithmetic and radical expressions of any level of complexity.
Looking for Domain and Range of a Function
Now it is very easy to derive the domain and range of functions like Y = X2, you can just tell that X and Y can take any real number from the X-Y plane but have you ever thought of defining the domain and range of log(tan 2x + sin 3x) = cosine(-4)(2x). But now you can solve such critical and complex problems with an algebra calculator without breaking sweat and you will also be getting all the steps as well
Coordinate Geometry
Now you can easily find the focus and directrix and whether parabola opens up or down by just inserting the equation into algebra software. Addition, subtraction and multiplication of trinomials are quite tiresome, since they involve lots of terms to manipulate. However, by leaving the job up to algebra calculators, you will be able to get results within a shorter period with 100% accuracy. Similarly, algebra calculators can save the trouble for you in calculating matrices of 33 or 44 order or its inverse matrices.
So now you need not to start worrying when you see indices, rational numbers or exponential equations. Parabolas, hyperbolas or ellipses can all be easily graphed within computer algebra systems.
October 18th, 2009
Let’s Explore Algebra
Algebra is a wide part of mathematics that uses generalization by exchanging letters for numbers. This abstraction is the very reason why most individuals find algebra scary and too difficult to handle and it is the same reasons why some students find it fun to play around with. topics of algebra range by working through simple tasks such as factoring polynomials and eventually progressing on to finding the product of matrices. Most individuals start to try Algebra by adding, subtracting, reducing and simplifying fractions . later on, they would move on to more advanced stages of solving algebraic equations using the greatest common factors and converting fractions in to decimals.
Exponents and Radicals and Graphing Oh My!
There are many another advanced themes. First there are exponents. An exponent is the tiny number placed to the right and slightly above a number or algebraic expression. In this example (x + y)3 where the 3 is the power and denotes the power to which that number is raised. The above algebraic expression is read as, x plus y to the third power. In working with exponents you can add, subtract, multiple or divide them. If you pick up the fundamentals, you will soon start working with rational and negative powers and if you think those are not challenging enough, hopefully radicals will spin your head. A radical, simply put, is the reversing of an power. The V beside 4 denote a radical expression which means, the square root of 4, which equals 2. The inverse of “V” symbol is “^” which denotes that the number it refers to is a multiple of the principle number. Therefore, 2^2 which is read as 2 to the 2nd power, equals 4. As with exponents, radical expressions can be added, subtracted, multiplied and divided. Radicals can be changed into powers and powers back into roots. If exponents and roots aren’t enough, there is always graphing. The best way to start with graphing is to draw lines and try to work out if they are horizontal, vertical or neither. Another question to ask is whether the line has an x-intercept or a y-intercept Furthermore, try and see if you can find the slope of a line. After you master graphing lines, a whole world of circles, parabolas and hyperbolas awaits you!
Help is Out There
While you are learning algebra if the terms and concepts seem too much to handle, relax and take a break. Did you know that there are many resources out there that can help you master complex systems of equations, quadratic formulas and polynomials. Look for math tutors or software applications that will walk you through stepwise process on how to solve any problem. Know that frustration is not your only friend because any of these tools can help you become an algebra guru in very little time.
July 11th, 2009
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