What is a Scientific Theory mean?

Everything that is related to science is based on theories. A theory is a tool that explains a phenomenon or tries to, and then it is endorsed by a practical demonstration. No matter what kind of theory we are talking about, atomic theory, gravitation theory or evolution theory, they all derived from a very extensive observation framework or experimental results. Certain theories are taken by people just as a speculation or a guess. A theory cannot be labeled as right or wrong. It puts forward an assertion and is valid irrespective of the domain it approaches. Consequently, the theory of the concepts of evolution has the same validity as the concepts of gravity or atoms.

The emergence of a theory as a process is similar to the snowball effect.

Ten things about Magnets i bet you don't know it

We all know that the magnets

  is a material or object that produces a magnetic filed. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials like iron and attracts or repels other magnets.

and here's a 10 things about magnets i bet that you don't know it

1

If you cut a magnet in half, you get 2 smaller magnets as a result, each with their own north and south pole.

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2

The north pole on a magnet points towards the north pole on the earth. This is because they are both giant magnets and are aligning themselves together. This is how a compass works.

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3

To make a new magnet, take one you already have and then rub it on a new piece of metal. This process is called magnetisation and will turn any piece of metal into a magnet.

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4

Electromagnets are not magnetic all the time. If you pass electricity through a nail wrapped in a copper wire, it turns into a magnet. Once you stop the flow of electricity - it is just a nail and wire again.

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5

A magnetic field is an invisible area around every magnet that attracts metals and other magnets to it. That is why you can slowly push 2 magnets together and they will jump to each other, due to them entering their magnetic fields.

 

What is Science?

What is Science?

 

Exact science in the modern sense started with Galileo Galilei. He understood that theories must be tested by observations and experiments. The “scientific method” implies that we:

1

Make a guess about how nature works

2

Test the guess via observations and experiments

3

Improve or discard the theory, i.e., back to 1

Science is organized doubt

Within science there is never total certainty. Instead, science has provisional “truths” that continuously are being questioned and replaced/revamped. Sometimes they even collapse completely and are replaced by entirely new “truths”. One example is how quantum mechanics replaced Newton’s mechanics for microscopic objects, as Newtonian theory is inapplicable in that realm.

Ten things about water i bet you don't know it

1

Water is constitute about 78% of the human body, which needs of 1-7 liters of water daily to avoid dehydration

2

Water is everywhere-there are 332,500,000 cubic miles of it on the earth’s surface. But less than 1 percent of it is fresh and accessible, even when you include bottled water.

3

Plasma, which constitute 55% of the blood in the human body is composed of 90% water

4

You can make your own water by mixing hydrogen and oxygen in a container and adding a spark.