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.

 ****

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.

****

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.

****

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.

****

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.

 

The Hubble Space Telescope

The Hubble Space Telescope

The Hubble Space Telescope is the greatest piece of equipment of its kind ever assembled by mankind. It is to space exploration what the invention of the wheel was to the progress of modern industry. This one endeavor may have done more for the development of modern astronomy than all previous efforts combined. The telescope derives its name from the famous space astronomer Edwin Hubble. The Hubble Space Telescope produces extremely vivid photos due to the fact that it sets beyond the earth's distorting field of gravity.

Conspicuous Beginnings

The funding for Hubble arrived in the 1970's yet it was not launched until 1990.

What the Atoms is Like

What the Atoms is Like

Perhaps you have seen a picture of the solar system with the sun in the centre and several planets, one of which is our Earth, revolving around it. Except for the fact that the atom is so small, and the sun and the planets so huge, they are much alike. Each atom has a centre, called its nucleus. In this centre are one or more particles called protons. A proton is a particle that has a positive electrical charge. Revolving around this centre, or nucleus, are particles of negative electricity called electrons.

An electron is very light. It takes 1,845 electrons to weigh as much as one proton. As you can read in the article on electricity, positive and negative electricity attract each other. You may have seen how this works with two magnets. Each magnet has a positive end and a negative end.

What Are Atoms?

What Are Atoms?

Everything in the universe is composed of tiny particles called atoms. Take the smallest grain of sand you can find, the smallest you can see with your naked eye, and there are still billions of atoms in it. For thousands of years, men have written and guessed about the nature of tiny particles like these, but they did not have any real idea of what an atom is like.

Thinking men in ancient Greece, including one named Democritus, 2,500 years ago, asked this question: What would happen if you should cut a piece of iron into smaller and still smaller pieces? You would finally get to a particle so small that you could not cut it further. They called this imaginary particle the atom, which in the Greek language meant "uncuttable." But they did not have any real idea of what an atom is like.

Why Is Venus Too Hot for Life, Mars Too Cold and Earth Just Right?

Why Is Venus Too Hot for Life, Mars Too Cold and Earth Just Right?

let's see why

^__^

Earth's neighboring planets, Venus and Mars, once seemed the most promising places in our solar system to find conditions suitable for life. But space probes have discovered that Venus is far too hot, with an average temperature of 460 degree Celsius (860 degree Fahrenheit) and a crushing atmospheric pressure 93 times as great as our own. And Mars is a chilly planet, with temperatures averaging -60 degree Celsius (-75 degree Fahrenheit) and a thin carbon dioxide atmosphere. Neither planet would be suitable for life even of a very primitive kind.

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.

Facts about Space in Questions and answers

Welcome 

here is a facts about space by easy way in questions and answers

can you hear a shout in space?

not unless you have a radio in your space suit .There is hardly any air in space .Without air

or another way to carry the sound wave ,there is no sound.

Where does space begin؟

Beyond earth's atomsphere - 60 miles (96 Km) above the surface of the earth .The

atmosphere is like a blanket of air. It covers the whole earth and provides the
oxygen we need to stay alive. The higher you go, the thinner the air gets. When you
reach 60 miles (96 km) there are few traces of air. This is about where the atmosphere
ends --- and space begins.

Where does space end?
It doesnit. Space is endless. It goes on way beyond the solar system and past the most
distant stars.

Welcome to the science blog

welcome my friends to this science blog we will talk about everything science from physics to 

 

Cosmology and from chemistry to biology and astronomy , philosophy,  Mathematics, 

 

Technology , Robotics and about any thing

about science we will talk about it by simple way so everyone one can understand it without any 

 

Difficulties we will enjoy and fun with science

i hope that blog be of you like

....