Dreaming is what we do every time we sleep even if we don’t remember our dreams. there are three stages in sleeping, in the first stage: Our eyes are closed, but it’s easy to wake up. This phase may last for 5 to 10 minutes. The second one: We are in light sleep. Our heart rate slows and our body temperature drops. Our body is getting ready for deep sleep. And the third one: This is the deep sleep stage. It’s harder to rouse ourselves during this stage, and if someone wake us up, we would feel disoriented for a few minutes. This first three stages are called NREM sleep (non-rapid eye movement), during the deep stages of NREM sleep, the body repairs and regrows tissues, builds bone and muscle, and strengthens the immune system, followed by the REM sleep which happens 90 minutes after we fall asleep. The first period of REM lasts about 10 minutes. Each of our later REM stages gets longer, and the final one may last up to an hour. Our heart rate and breathing quickens and it’s the phase where we have intense dreams since our brain is more active. We may experience nightmares among those dreams. But the fascinating thing about nightmares is the reaction of our brain. Research has shown that a lot of dreaming occurs in the visual cortex, which is linked to the amygdala (an emotional response center). During a nightmare, the amygdala sense the fear in the person and cut REM process, so both of them, the visual cortex and the amygdala, get fired up and trigger autonomic arousal of the body, (the heart starts beating faster, breathing becomes labored, and we can start sweating profusely) we wake up in a panic. That means that thanks to the amygdala we may come out of a horrible nightmare which we wouldn’t be able without it! How fantastic!
Light or no light; this is the question.
We’re all fascinated by those splendid starry nights, where we see ourselves as small insignificant beings looking at a vast realm of wonders. We’re aware that those shinning white dots are painted on a black background, and that is what this is all about. I’ve been wondering about the darkness of space since I can remember. I always thought that space was dark because that was its colour, space was THE black colour. Filled with different types of electromagnetic radiation which gives us about 97% to 3% of matter. But I’ve learned lately thanks to Joseph through the RTU blog that our eyes may deceive us sometimes. As I’ve written in a previous post called “Can we catch rainbows ”, “Pure white light” or that which comes from our Sun can be split into a continuous spectrum of frequencies that range from the shortwave ultraviolet to the near infra red longer wavelengths. Our human eye can distinguish around 10 million different such frequencies, not just 7. Seven has become a common misconception adopted as reality simply for most humans convenience. We can make black colour by mixing yellow, bleu and red, even though it’s never totally black. To make things worse, black is the colour of an object which absorbs all of the colours of visible light, for which we can assume to be the same as no light.
Our brain shows us what our eyes detect; they are light receptors. So when there is no light, there is nothing to be received, therefore we don’t see anything. Such as when we turn off the lights and we stand in a pitch “black” room. The room hasn’t turned black when the lights went off, it’s our brain that perceived the darkness as if it was blackness. We may still touch the chair or the table but we’re not able to see them. The universe uses the same mechanism with a slightly difference. The universe is only dark in the sense that it is devoid of radiation that can be detected by the human eye; if it is dark to the human, it does not make it devoid of electromagnetic radiation.
Now, to answer the main question, is space dark or black ?
It is dark. Because we perceive what has no light, black. If we take a region of space full of stars, we would notice that space is filled with light and colours. Space is a place of wonders, with which we would never be fully acquainted.
But in the reality, is space really dark? If we could travel to the end of the universe, would we see a different horizon? Or is darkness/nothingness an illusion perceived only by the human eye?
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.
And another collaboration with my lovely Nyctophile. Enjoy
As the end of the day approaches
We take our journey to the place
Where everything is possible
We lay on the peaceful grassy hill
Away from worries and sorrows
Hand in hand we look at the sky
Waiting for the moment of eternity
No humans can reach out for it
But our souls can, when the lights
Come out of darkness and appears
As white dots on a black canvas
There starts our voyage into unknown
Lands of power and chaos where ecstasy
Lift our spirit high into the vast Kingdom
Where doubts dare not visit seldom
We look at the clumsy play
Of the twinkles in shades of grey
And we get lost in the wonderland
As if garden of eden has come to land
We dare to take a leap of faith
To forget the world we live beneath
You grasp my hands so tight
As if we are the ones to ignite light
To turn on the melodies of love
In a world people lives to love
Being in good company brings more joy than a whole Saturday night
A starry night is what
Awakes me in the darkness
but i can’t see them