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flysky

Joined 8 years ago from Zagreb, Croatia

  • 30
    Articles
  • 76
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  • Fluid mechanics-have you ever drunk mis mash cocktail?
    0

    Fluid mechanics-have you ever drunk mis mash cocktail?

    4 years ago

    How came that wine and orange stay unmixed in mis mash cocktail? Why we don't drop in the show when having snowshoes? What is the physical principle behind hydraulic press? The article gives answers on these and similar question. An introduction to fluid mechanics, more precisely fluid statics is...

  • Projectile Motion-how far can one throw a javelin?
    4

    Projectile Motion-how far can one throw a javelin?

    4 years ago

    The article addresses thy physics of projectile motion. Firstly we discuss vertical and horizontal projectile as a special case of this type of motions, caused by the gravitation force. All basic concept relating projectile motion, including trajectory, initial velocity, horizontal range are...

  • Mild and Wild Randomness (normal distribution vs Cauchy distribution)
    2

    Mild and Wild Randomness (normal distribution vs Cauchy distribution)

    4 years ago

    There are two especially different types of randomness! For the type we get used on, the law of large number holds and we have macroscopic certainty. However, this is not always a case. For so-called wild randomness fat tails are characteristic, which means that extreme events are much more...

  • Modern Portfolio Theory Overview
    0

    Modern Portfolio Theory Overview

    3 years ago

    This theory on capital allocation is clearly explained and it is illustrated by an example. An optimization of two assets portfolio is shown on a concrete data set of history data. The article point out disadvantages of the theory, even suggesting the prefix 'classical' rather than 'modern' in the...

  • The Magic of Prime Numbers
    0

    The Magic of Prime Numbers

    4 years ago

    Distribution of prime numbers among the set of natural numbers is one of the most intriguing questions in the number theory and in the whole mathematics. Reportedly, a German mathematician D. Hilbert (who presented the famous list of unsolved problems in 1900 in Paris, including the Riemann...

  • Can you catch the dollar? - physics of free fall
    0

    Can you catch the dollar? - physics of free fall

    4 years ago

    Starting with a tricky challenge of catching a bill we will discuss the physics of free fall. The intrigued fact whether the free fall depend on body mass or not dates back to the Galileo Galilei's experiments within the Leaning Tower of Pisa. The article addresses a rather comprehensive study of...

  • How does a roller coaster work? - the physics of circular motion
    5

    How does a roller coaster work? - the physics of circular motion

    4 years ago

    How come that bodies don't fall circling vertically to the ground? What is the force that overcome its weight? What is the physics behind excitements like a roller coaster trip? The article presents the answer on these and similar questions and addresses an overview of the uniform circular motion.

  • Newton's law of universal gravity
    1

    Newton's law of universal gravity

    5 years ago

    Apples fall to the ground, but the Moon not! Why in some cases the gravitational interaction causes the free fall while in other the circular motion? The article presents the Universal Law of Gravitation, with some interesting related subjects.

  • The paradox of binary stars
    6

    The paradox of binary stars

    5 years ago

    Binary stars are one of the most attractive and interesting astronomical objects. Scientists began to address more of them entering the telescopic era. Begging with discussion on kinematics of the binary system, we talk about an almost unbelievable phenomenon known as Albireo paradox. Further, we...

  • Kepler's Three Laws of Planetary Motion
    4

    Kepler's Three Laws of Planetary Motion

    8 months ago

    Johannes Kepler, one of the greatest astronomers, discovered fascinating laws underlying Earth's motion. Three Kepler's laws of planetary motion rule all motions in the Solar system as well as any planetary system. Giant contribution in this discovery gave Tycho Brahe with his accurate measurements...

  • Univariate and Multivariate Linear Regression
    8

    Univariate and Multivariate Linear Regression

    21 months ago

    The article is written in rather technical level, providing an overview of linear regression. Linear regression is based on the ordinary list squares technique, which is one possible approach to the statistical analysis. Both univariate and multivariate linear regression are illustrated on small...

  • Fascinating world of Leonardo Fibonacci numbers
    12

    Fascinating world of Leonardo Fibonacci numbers

    4 years ago

    What is the main reason of Mona Lisa’s attractiveness and an exceptional beauty? Whether the secret is in her smile or just in Leonardo da Vinci’s excellence in painting? Whatever the answer is, there is a strong connection within art and numbers. This article presents concise presentation of...

  • Croatia and Malta, the genuine Mediterranean experience
    6

    Croatia and Malta, the genuine Mediterranean experience

    4 years ago

    Croatia and Malta are two magnificent Mediterranean countries. Both being very known tourist countries, in some sense they are neighbours across the see. While Croatia is here introduced by its top 10 highlights, Malta is presented through a travel article. The hub can serve as a tourist guide.

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