What about … #37

Today I’ll try to explain what the dark energy and dark matter are in my opinion.
We all heard of the theory of relativity which is quite dithering.

There are two kinds of relativity, the first is the special and the second is the general.
The first one says:
1. That the speed of light is constant. It never changes, whichever speed you travel with the speed of light will be the same. For this to happen, time slows down for the one who is moving close to the speed of light. It has to be close to the speed of light or at least half the speed of light, otherwise you won’t notice a thing.

2. If somebody is travelling at a different speed or direction than you, they will disagree with you on whether certain events happened at the same time. For instance, if you’re standing on a moving staircase moving at 2 km/Ⓗ and someone is watching you standing still, this person will see you moving at 2 km/Ⓗ. Now if you start walking on this stairs, you’ll see yourself walking at 2 km/Ⓗ but this person who is watching you will conclude that you’re walking at 4 km/Ⓗ. In fact both of you are right, it is a question of relativity.

3. If something is moving very fast, it gets shorter in the direction that it is moving. If you take a ball hanged on a piece of rope, and you make it spin faster and faster you’ll notice your ball getting shrink a little in the direction it is spinning, but if it spins close to the speed of light you’ll see it shrink a lot.

Now in the general relativity we can speak of the twin paradox which had nothing to do with our topic but to give a breve description we may say that two people moving apart, the first at a normal speed and the second close to the speed of light, if they could see each other’s watch, they would see each other’s time slowing down even though only close to the speed of light that time slows down. So when this person who is traveling close to the speed of light decides to go back, he will find the other person much older than him.

Speeding Up and Slowing Down Are the Same Thing, for e.g when you take a cab you feel the acceleration when the taxi driver accelerate, you feel a “force” pushing you behind. When this driver slows down, you feel something pushing you forward. in fact this is called “inertia”: something which has mass shouldn’t be changing state – either in motion or still. This force which pushes you backwards when the cab driver accelerates is the same sensation as gravity. When he slows down, it is your seat belt which stops you from moving forward, but you still feel this gravity which pulls you. It’s the same thing if you find yourself floating in space and a spaceship accelerates beneath you, you’ll feel or see yourself falling into the spaceship and as soon as it reaches you, you’ll feel as if gravity was pulling you from beneath. This is a way to say that gravity and acceleration is the same thing. To make myself clear I’m not speaking about the famous Newton’s gravity ( the more mass an object has, the more gravity it produce), I’m speaking about the source of gravity as mentioned above when you were floating in space. Massive object floating through space, attracts space to itself, which we call curved space or curved space-time. As “time” never leaves “space” it is better to call it spacetime.
The spin of a heavy object, such as Earth, should twist and distort the space-time around it.
Now what all this has to do with dark energy and dark matter? Well it is complicated to describe but you see, the dark energy is what is expanding the universe, so this dark energy is the pillar which holds the universe from crumbling upon us. without it the universe would have crunched already. But what is wonderful is that it’s an invisible pillar. Can you imagine a big building with its walls, its doors, its windows and even its roof but with nothing visible to hold the roof? So this dark energy coming from nowhere – it’s better to say “are” – are the pillars of this spectacular huge sky which stands all around us.

Black holes is a region of space having a gravitational field so intense that no matter or radiation can escape. So black holes slow down the expansion, absorbing whatever comes by. It turns out that roughly 68% of the universe is dark energy. Dark matter makes up about 27%. The rest – everything on Earth, everything ever observed with all of our instruments, all normal matter – adds up to less than 5% of the universe.
We know that space is not a completely empty space, we can find particles mainly, hydrogen and helium, or even gravitational waves which are ripples in the curvature of spacetime that propagate as waves at the speed of light, generated in certain gravitational interactions that propagate outward from their source, but I believe that space isn’t completely empty by no means. It is huge gravitational field.
Between the possibilities for the dark energy to be – a property of space, a new dynamic fluid, or a new theory of gravity – I would personally believe that it’s a property of space! It’s the pillar which holds and expands the heavens.

The dark matter is even more complicated, although it has not been directly observed, its existence and properties are inferred from its gravitational effects such as the motions of visible matter, gravitational lensing, its influence on the universe’s large-scale structure, and its effects in the cosmic microwave background. Dark matter is transparent to electromagnetic radiation it is so dense and small that it fails to absorb or emit enough radiation to be detectable with current imaging technology. Some galaxies are made of 99% of dark matter such as Dragonfly 44, an ultra diffuse galaxy with the mass of the Milky Way galaxy, but with nearly no discernable stars or galactic structure or even VIRGOHI21.

What about … #28

Who haven’t seen a portion or an entire rainbow when the sun shows up after a rainfall ? Sometimes we think that we can walk underneath it.  We start walking toward it without ever getting closer – which is quite disappointing. We may say that a rainbow is a beautiful mirage happening on wet conditions. No water, no rainbow.

So what is exactly this mirage? Actually the rain water droplets act like a prisms dispersing  the sunlight into its true colors. Newton was twenty-five when he discovered that the white light of the sun is in fact a mixture of light of different colors.

If light is a mixture of 7 colors which we’re unable to see with our own naked eyes, that means that all around us is a multicolored world with much more nuances than we’re accustomed to see. I believe that the universe might not be as dark as it seems after all.

We can produce black paint by mixing equal parts of red, yellow, and blue together, that’s interesting isn’t it ? What if the night’s sky hue is in fact the product of two or three different colors combined?

Let me explain: As we know, the universe is made of particles and waves – as we are. Some of these particles are well-known and some aren’t, well I propose since there is nothing which proves the contrary, that some of these unknown particles are what give the dark hue to the heavens.

 

What about …. #55

Meditation isn’t an act of a specific religion, some think that you have to be Hindu or Buddhist to practice it; but it’s wrong. Anyone can do it, and as much as this will astonish you, All the prophets of ancient times, (i.e of the Monotheistic religions) practiced it. How can you explain the hours of adoration by themselves either of Jesus, Mohammed, Abraham, Noe…..? Of course they had the know how. And they were more capable than us, as they were Men of God.

I’m not an expert on meditation, but I use it a lot even without being aware of it. So I’ll explain basically how and why you should perform this self awareness everyday.

Meditation relieve stress, anxiety, fear, depression and other things of which I’m not aware of yet. 

It is a way to to be at peace with ones soul and to let this one take leadership over the body. And it is also a way to be in contact with God as you use your soul.
So start by selecting a quiet place which you’ll be using as often as possible, sit or lay comfortably (but not too much or you’ll fall asleep). Now begin by breathing slowly. For a beginner it is best to keep breathing without stopping the flow of thoughts. Just breath normally trying to listen to the “nothing”. Focus on the sound that you hear in the quiet place you are in; which should be Nothing. 

After a few days of practice, you should try to limit your thoughts. I personally think that it’s not easy at all. But try non the less. Practice the listening of the “Nothing” and limit your thoughts as much as you can but don’t force too much, just enough to concentrate on the Nothingness around you. This will take time, but practice makes perfect.

After some time, when you feel ready for the next step, try to focus on your heart beat, you should be able to hear it. You should be able to hear your breath and your heart beating quietly. 

When you are used to it, try to focus on your inside and your breath, you should stop more thoughts, and concentrated harder on your inner self. 

By that time you should be able to stop any source of thought and any sound coming from the outside penetrating inside your head. 

Then you should be at peace with yourself.