The Light of Energy – By the Laws of Physics

Light By The Laws of Physics

Light is another expression of Energy in the form of Electromagnetic Radiation. In science, we use Light to change, gauge, and measure, the spatial forms and characteristics of other states of Matter, and Energy.

 

So, What Is Light exactly? Something we Can, see? Or, something that allows us To, see?

Well, it’s both of these things, and more.

Science tells us that a Quantum is the least amount of any physical entity needed to affect something else. Quanta, is the plural of Quantum.

Photons are Massless Elementary Particles, and are the Quantum of the Electromagnetic Field. A Photon is a single Quantum of the entity Light. So what about the other components that make up Light?!

This is what it’s all about, and the truth is out – again. But let’s start at the beginning…

Light Representations Through the Years

  • 500 BC Empedocles proposed that Aphrodite lit fire in the human eye, causing it to shine outwards and thereby illuminating whatever the eye was directed at.
  • 300 BC Euclid claimed that Light travels in straight lines, and describes reflections, in his written work ‘Optica’.
  • 55 BC Lucretius states in his work ‘On the Nature of The Universe’ that:

‘The light and heat of the sun, these are composed of minute atoms which when they are shoved off, lose no time in shooting right across the interspace of air in the direction imparted by the shove.’

  • 2 BC Ptolemy presented his theories of Light Refraction, in his book ‘Optics’.
  • In Hinduism, the Samkhya School of Thought believes that Light is one of the Five Elements.
  • The Vaisheshika School of Thought believes in the Ether, the four Elements, and that Light comes from super high velocity atoms from Fire.
  • The Vishnu Purana {one of 18 medieval Hindu texts} represents Sunlight as ‘The Seven Rays of the Sun’.

 

What Is Light Made Of?

Physics tells us that unlike most other things in the Universe, Light is made up of both Waves and Particles. More specifically, the characteristics of an Electromagnetic type of Wave, and the energy of the Photon particles found in Light. This simultaneous dual representation of energy as Light, is what is known as the Wave/Particle Duality Paradox.

How is Light Measured?

Light is Measured by its Wavelengths and Frequencies. By international agreement, the Metre is the official unit of distance and which translates to nanometres {nm} for quantum objects like Light. Whereas Frequency is measured in {Hz} and at a quantum level, in Terahertz {THz}.

The Photon travels by Waves at the fastest speed in the entire known Universe, the ‘Speed of Light’, at 186,282 {9} Miles Per Second, or 300,000 {3} Km Per Second. That’s like a human-being bullet travelling seven and a half times round the world, in a second. It also allows us to measure other quantum objects.

Light – Moments in Time

Jiffy

Did you know that when we say, ‘I’ll be back in a Jiffy’, we are actually referring to an expression of a unit of time? A ‘Jiffy’ is 33.3564 Picoseconds.

Picosecond

We covered a Picometre in a previous article and similarly a Picosecond is One Trillionth of a Second. For context, think of it on a scale like 1 Picosecond to 1 Second, being like what 1 Second is to 31869 Years…

Femtosecond

A Femtosecond is an even shorter moment than a Picosecond, coming in at a Quadrillionth of a second. This is an even more ridiculously and almost unrelatable short amount of time. Just how short, led Astronomers to determine the Unit of a Lightyear, corresponding to objects travelling vast distances and at vast speeds, like those on a quantum scale in Space

Lightyear

Light travels a distance of ‘Six Million, Million, Miles Per Year’  

A Lightyear is the distance it takes a beam of light to travel in one year. This also allows us to figure out how far away things are in the Universe.

What Is the Electromagnetic Spectrum Of Light?

Light is made up of the energy and characteristics of Waves and Particles, each with a corresponding Vibration, Frequency, Colour, and Sound. The Electromagnetic parts of a Lightwave are forms of radiation particles and are represented by the Electromagnetic Spectrum of Light.

Only a small part of the Electromagnetic Spectrum of Light is actually visible to the naked human eye, at one tenth of a billionth of the entire spectrum. That’s a lot of stuff we can’t see with the naked eye. We know that. So, what about that?!

How Many Types of Electromagnetic Radiation Waves Are There?

The Electromagnetic Spectrum is divided into the seven recognised types of Electromagnetic Waves that make up Light, and we categorise these according to their Wavelength and Frequency:

  • Radio Waves
  • Microwaves
  • Infrared Radiation
  • Visible Light
  • Ultraviolet Radiation
  • X-Rays
  • Gamma rays / Cosmic Rays

These seem fairly self-explanatory, but in brief, Radio waves, vibrate to make the sounds we hear on the radio. Microwaves operate in such a way that they can be used to conduct heat, as with the familiar microwaves many homes use. Infrared waves can’t be seen by our naked eye either but the receptors that can, are evidenced in the use of remote controls like the commonplace TV Remote, Visible waves are the colours that illustrate the images we see at any given instant. We are familiar with UV waves represented as Light and against which most protect their eyes from when looking at directly. Similarly with X Rays, except with the removal of certain particles to produce the black and white tonal images we are familiar with.

That leaves Gamma Rays, also known as Cosmic Rays. But first, a little about what sort of things affect Light, and how.

Temperature Affects Light

Incandescent, Luminescent, Florescent, and Evanescent Light are a result of the Temperature of the Matter involved in the energy transmuting process. The higher the temperature, the brighter the Light. The brighter the Light, the more difficult it is for us to see. But we have some tricks to get round this.

Then there’s Photoluminescent Light where Light is absorbed by Matter like Plants, and also Bioluminescent which relates to the Oceans and includes US. We literally give off light and whilst most need equipment to detect it, some don’t.

If Light Is White, Why Do We See It in Colour?

The colours we interpret are a result of the characteristics of Wavelengths which in turn are determined through reflections, refractions, positions, actions, and reactions, of Matter.

Light, Prism, Spectrum

When Light passes through a Glass Prism, and determined by the length of the Wave, we can see the individual colours of each individual component from that particular Light Source. Different components determine the different types of Light.

weather.gov

In this Image, the Light Source is Sunlight and the individual colours are the Spectrum we are all familiar with. But direct that Spectrum of Light back through a second Prism and the Spectrum of Light turns back to the original Pure White light.

Shadows and Darkness – What Is the Dark?

In Physics, Shadows are Areas that are blocked from receiving a Lightsource by an Opaque Object. The Light remains in front of the object whilst the Shadows occupies the spatial volume behind it.

Similarly, Darkness are Areas that receive a limited Lightsource and so appear Dark. Or, when the object or state of matter itself is such that it absorbs Photons – that is, when that object is even more powerful than the Energy in Photons, and that’s Dark.

Physics is still trying to understand things like the Cosmic Shadows of Dark Matter…

In the meantime, one of the Darkest Manmade Materials, is ‘Vantablack’ Material. It absorbs a whopping 99.975% of all Visible Light and was created by the UK’s Surrey Nano Systems. VANTA, is an acronym for Vertically Aligned Nanotube Arrays.

The ‘Bortle Dark Sky Scale’ is what we use to measure the luminosity of the Night Sky and Stars at a specific position or location.

Light Facts

  • It was another half a million years after the Big Bang before Photons evolved enough to start flying around the Universe carrying Light, and which can still be identified today, over 4 billion years later
  • Light is slowed down from its direct path when it comes into contact with Matter. In the case of Eyeglasses, it’s this slowing down of Light waves and particles passing through the glass, that allows us to see more clearly
  • Ancient Greece told us that Light Rays are emitted from our eyes. Science tells us that indeed we give off a Light and that this is brighter during the daytime and especially around our mouths
  • In a confined space, a 100-Watt Lightbulb can emit temperatures of around 325 Degrees F
  • On the annual Vernal Equinox, Light waves of Night and Day are the same length and thereby simultaneously everywhere at the same time and place
  • Apollo Astronauts used Mirrors to bounce Laser Beams off the Moon and this has allowed us to work out that the Moon is actually moving one and a half inches AWAY from the Earth, every year
  • ‘Sunlight Saving’ and ‘The Right to Light’ is an English Law that allows someone to contest the construction of any building that would obscure natural sunlight from entering another property – {if that sunlight has been available for 20 years or more…?}

Let There Be Light – Always

We interact with Energy and Matter in every aspect of our daily lives. Even our ability to see is dependent on the physics and nature of the stuff of matter. Those special particles, and waves which through there transference and transmutation of the energy within them, form a chain reaction of events that ultimately allows us to see the things around us and their corresponding colour within the spectrum of light we can see with the naked eye.

…But, if we change the state of Matter, we change the energy of the thing itself, and vice versa

Like Light and Sound, If we change their environment, we change what we see and hear…

Like the cells in our bodies, we change the environment of the Atoms within our cells by changing the frequency and vibration of them…

Remember the article on Sound and how music affects our heartbeat? And that certain frequencies are good for us/positive, with others being harmful to us/negative?… Well, that’s the sound aspect of Energy we can hear. We can hear that we are changing the energy. But what about the corresponding, and simultaneously existing {Wave/Particle Duality Paradox} Light we can’t see? Where is that? Where is it going? And where is it coming from? How can we see it? And how can we change it?

Ahhh, well, to explain this, that’s why we need to look at the representation of Light from other perspectives like Astronomy and Astrology, Math and then Human…

As ever there is more to understand.

So next we get better acquainted with another base state of matter – Plasma. As we take a deeper look at the Light of Energy, and some of the massive light sources affecting our planet that are Cosmic Rays, the Majestic Sun and Magical Auroras.