Author Archives: mattelararen

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About mattelararen

Licentiate of Philosophy in atomic Physics Master of Science in Physics

Exceldiagrams

Publicerat den februari 19, 2013 av mattelararen

Excel is a versatile programme for e.g. statisitics. Learn more!

Publicerat i Gymnasiematematik(high school math) | Lämna en kommentar

Asteroid-passage

Publicerat den februari 15, 2013 av mattelararen

In the evening today February the 15th. an asteroid flies by close to the Earth only about 27 600 km away. It measures about 40 m in length and is similar to the one responsible for the Tunguska (Siberia) impact … Fortsätt läsa →

Publicerat i Astronomy, Uncategorized | Märkt , | Lämna en kommentar

Conical sections

Publicerat den februari 11, 2013 av mattelararen

The force of gravity determines the trajectories of the celestial bodies. Mathematical analysis reveals that there are three types of trajectories possible for a body moving in a gravitational field determined by Newton’s law of gravity. If one of the … Fortsätt läsa →

Publicerat i Geometri, Gymnasiematematik(high school math), matematik 2c | Märkt , , , | Lämna en kommentar

Thermodynamics 2 Entropy

Publicerat den januari 10, 2013 av mattelararen

A collection of rembrandts self-portraits serve as an illustration of the passage of time When left to itself snow spontaneously would never build a snowman. It will only form different kinds of heaps . This can be undestood as the … Fortsätt läsa →

Publicerat i Calculus, Gymnasiefysik(high school physics), Thermodynamics | Märkt , | Lämna en kommentar

Thermodynamics 1

Publicerat den januari 8, 2013 av mattelararen

Världens största ånglok, Big Boy, är exempel på en värmemaskin vars effektivitet beror på temperaturskillnaden mellan vattenångan och den omgivande luften. A spacecraft enters  the atmosphere with a velocity of appr. 40 000 km The temperature is a measure of … Fortsätt läsa →

Publicerat i Thermodynamics | Märkt , , , , | Lämna en kommentar

Science RSS-feed

Publicerat den januari 5, 2013 av mattelararen

For your service and convenience; I have added an RSS-feed from Daily Telegraph as a widget in  the meny list to the right. Just click on  the link and the latest Science and Tech-News will flow into your computer. Today … Fortsätt läsa →

Publicerat i Technology, Uncategorized | Märkt , | Lämna en kommentar

Merry Christmas & Happy New Year

Publicerat den december 29, 2012 av mattelararen
Publicerat i Uncategorized | Märkt , | 1 kommentar

MacLaurin-polynomials

Publicerat den december 12, 2012 av mattelararen

→Taylor-expansion is a method of approximating a function f(x) around a point a with a polynomial of the argument x in the vicinity of a. The polynomial itself consists of the derivatives of the function of various orders. Tn(x) = … Fortsätt läsa →

Publicerat i Calculus, Gymnasiematematik(high school math) | Märkt , | Lämna en kommentar

Publicerat den december 11, 2012 av mattelararen

Learn about buoyancy and how to compare apple and pears:

Publicerat i Uncategorized | Lämna en kommentar

Integration by parts

Publicerat den december 4, 2012 av mattelararen

Integration by  parts can be regarded as the inverse to the product rule for differentiation. Suppose U(X) and V(x) are  two differentiable functions. According to the product rule dU(x)V(x)/dx = U(x) dV(x)/dx + V(x)dU(x)/dx = U(x) dV(x)/dx+ V(x)dU(x)/dx Integrating both … Fortsätt läsa →

Publicerat i Calculus, Gymnasiematematik(high school math), matematik 4 | Märkt , | Lämna en kommentar