Posts

What is the difference between conjecture and hypothesis?

Similarities. Both of them are statements based on observations, that seem to be true, but have not been proved or disproved jet. Differences . As explained in G.Pólya and L.Bowden book "Mathematical methods in science", difference is in level of credibility that explanation is based on. Hypothesis is testable, and explanation is based on accepted grounds. Conjecture is proposition based on inconclusive grounds, and sometimes can not be fully tested. Another difference is that conjectures, unlike hypothesis, are used in math. Hypothesis usualy are used elsewhere. If conjecture is proven, it becomes a theorem . Still, the border between two terms remains blurry, and terms sometimes are used as synonyms. For example in math there is a conjecture called ' Riemann hypothesis ', which correctly should be called ‘Riemann conjecture’.

Aspects if life

The adventure of life is to learn . The purpose of life is to grow . The nature of life is to change . The challenge of life is to overcome . The essence of life is to care . The opportunity of life is to serve . The secret of life is to dare . The spice of life is to befriend . The beauty of life is to give .

No big deal

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No big deal is a movie studio . As companies novadays are cutting their budgets down on advertising, No big deal was created as subsidiary company for StyleMaster studio - famous and well known for their good quality movies . No big deal however, is targeted for clients with less paying capacity, and is offering years of expierence and specialists same as StyleMaster studio, but because using smaller equipment offers are much cheaper. TV reklāma

Will 1 kg gold weight the same after many years?

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Here is an interesting thing about any matter on the world . For example gold. If you own 1kg gold now. Than after a thousand years you will own a little more than 1kg. Surprised? Don't be. Here is an interesting and tottaly useless facts you never will need to know. But still, it just came into my mind recently. Sun  - the star of our galaxy is producing enormous amount of energy, right? Each second 600 000 000 tons of hydrogen atoms are smashed together with such a speed, that those atoms make 595 000 000 tons of helium atoms. Now the missing 5 000 000 tons are transformed into light energy. Yes. It's funny. 5 000 000 tons of light. No kidding.  And eventually small portion of all this light hits earth surface causing the earth to grow.  Obviously after many, many years earth mass will be bigger, and thus the gravity  it causes also will be bigger. So the very same 1 kg you own now will be heavier on planet earth. If i had some free time i would really like to do some math h...

What is "impossible triangle"? (In business)

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Impossible triangle, in business, is triangle that describes any good or service that is provided by any company. And it states that three values Quality, Speed and Price can not all be combined into one offer. One MUST be sacrificed. Either product will be delivered fast and in good quality, but it will cost more. Either it will be in good quality, cheap, but it will be delivered in ordinary time. Or maybe it will be fast, cheap but the quality will be sacrificed. I heard, from one Harvard's graduate, this is what they learn in first semester, in business school. I think this is what i learned in first week in 'life school'.

What is the color of mirror?

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The reason why mirror reflects all of the light beams in the same angle as light beams hit mirror surface is because mirrors are perfectly flat. And because all light reflects from mirror maintaining it's original angle, image is perfectly reflected and reconstructed.  All objects absorbs all light waves that hits it, except the lightwaves with color into which an object is itself. For example EU flag will absorb green, red, pink, orange, etc., but will reflect blue light waves. One exception needs to be mentioned here. There is no corresponging lightwave for black color and white color. Human eye indicates that object is white, if object reflects (or emits) all possible visible light waves. And in contrast black is indicated if there is no lightwaves. Mirrors are manufactured out of aluminium. Aluminiums is used because of it's suitable physical properties, and because it is almost white. Yes, aluminium is not perfect. It would be more better if aluminum was white. If you look...

Difference between 'made of' and 'made from'

I came across this linguistic question - is there a difference whether i say 'made of' or 'made from'. And sure it is! Here is an example to illustrate the difference: An ice sculpture is made of ice, because you can still see the ice. Wine made from grapes, because you cannot see the grapes anymore.