This is a very interesting thread. I watched only 4 videos at this point. Will try to grab more now and then. Thanks to all that have contributed for me to find and observe.
I hope my initial observation that came to mind is worthy of posting. Here it is.
Thinking of what we see as perception or electrical "signals" so to say.
We observe and perceive the outside world. Then find other ways such as telescope to observe or perceive at further distances. These perceptions are 1st hand experiences. Now we build satellites and launch them into space. There is no brain on board the can convert what data is what. It is only when we received and observe this data an image formed. So does this mean there are perceptive/electric signals pre determined and placed? How would a machine gather data though light waves and signal, wave ect. send back the same data. That one could look out with a telescope and see? Blows my mind.
Keeping in mind that some data being sent back to us is not making sense or is nothing what has been expected to be. So it really gets my neurons firing. No pun intended.
There's just so much we dont understand,and that's not through lack of trying shag!
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm.
Most of the light around you is invisible
The human eye is an incredible piece of evolutionary engineering. But the eye is only able to see light of certain wavelengths – and it's blind to much more light than it can see.
Light is actually a form of energy that travels in waves, and we can place these waves on the electromagnetic spectrum.
Radio waves
At one end of the scale we find radio waves – yes, they are in fact a form of light. With wavelengths that can be taller than a house, radio waves can travel vast distances. Because they have low energy, they don’t really interact with the environment and don’t scatter. This means that we can use them to transmit information across continents and even out into space.
Microwaves
Microwaves are a big part of our daily lives. They have wavelengths around a centimetre long and many common devices use microwaves to wirelessly transmit information, including your mobile phone and Leap cards.
And of course, microwave ovens use microwave light to cook food. Microwaves cause water molecules in food to vibrate. It’s this vibration that causes the temperature of the food to rise.
Infrared light
Infrared is just beyond the range of what the human eye can see, and has a wavelength about the thickness of a human hair.
Technology based on infrared light has been in common use in TV remote controls since the early 1980s. But we have thousands of other applications for infrared light, from predicting weather patterns to analysing molecules. The Infrared part of the electromagnetic spectrum that is most associated with heat; almost half of the energy arriving to the Earth from the sun comes as infrared light.
Visible light
This is light with wavelengths of approximately 400 nanometres to 700 nanometres. These may just be numbers to you but actually they describe every colour of the rainbow, from red to violet – all the light that our eyes are able to see.
Ultraviolet
Once we go beyond visible Light, we find ultraviolet. This light has shorter wavelengths – about the size of a single virus particle, so really, really small. It also has more energy than visible light. It's this extra energy that can cause damage to materials it interacts with, including our skin.
X-rays
Even shorter wavelengths have more energy but are also more dangerous and can cause significant damage to materials they encounter. Nevertheless, we have daily applications for them in the fields of medicine, security and, of course, science. The ability of X-rays to pass through soft materials, but not denser objects, is what allows us to produce shadow images of the human skeletal system.
Gamma rays
Finally, we come to gamma rays: rays of light far beyond what our eyes can sense. They have a great deal of energy, so much, in fact, that they cause a great deal of damage to human cells when they come in contact with them, destroying strands of DNA. Gamma rays are produced in some nuclear processes. Their production is rare on Earth but common in outer space.
It's amazing to consider that the rainbows that cross the sky are just a tiny, tiny part of a cosmic spectrum of light that is invisible to us.!
Now throw Quantum theory in to the equation and it becomes mind blowing as to what really out there!
