Tag Archives: Electromagnetic radiation

Is space-time relative or quantized?

When we look at light reflecting from an object such as a grandfather-clock, we see a time-delayed reflection through a radiation source, a photon. Our brains then process and turn that electromagnetic (EM) radiation into colours. So what our brains see is an interpretative description of electromagnetic radiation. If you are colour blind, you will see shades of grey; this is how matter looks before the human brain processes and adds colour.

So what is electromagnetic radiation? Electromagnetic radiation can be defined as: “Energy resulting from the acceleration of electric charge and the associated electric fields and magnetic fields. The energy can be regarded as waves propagated through space (requiring no supporting medium) involving oscillating electric and magnetic fields at right angles to each other and to the direction of propagation.“Source: Oxford Dictionary of Science, John Daintith, Elizabeth Martin, et al., 2005, Oxford University Press.

Electromagnetic radiation can be seen as a form of heat, and heat can be transferred from one body or system to another by electromagnetic radiation. We measure the amount of heat within any body or system as temperature. Temperature can be seen as a measurement of work, as the hotter something is, the more energy it has. Different forms of electromagnetic radiation are composed of varying forms of electrical charge (eV) and a corresponding frequency (Hz), with an associated wavelength λ in meters (m). Continue reading

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What constitutes time?

A definition of time can be found within the second law of thermodynamics, in entropy. From entropy we can establish a direction for the flow of time within the classical physics world. Entropy at its core is about energy and heat transfer. Heat can be transferred from one body to another by electromagnetic radiation.

Electromagnetic radiation has several measurable components, wavelength, electron volt and frequency and its energy can be calculated using classical and quantum methods, seen as a wave or a particle. Waves and oscillations permeate the universe and are present in whatever form of tool we use to describe the world about us.

One component of a wave or an oscillation is its frequency. We can experience frequency in the form of an earth tremor, as the ground shakes and the earth’s mantle vibrates. The word frequency is defined as being, “The rate of repetition of a regular event. The number of cycles of a wave, or some other oscillation or vibration”, source: Oxford Dictionary of Science, John Daintith, Elizabeth Martin, et al., 2005, Oxford University Press.

Subatomic particles can be broken down into smaller and smaller components. LHC at CERN is attempting to confirm experimentally what theoretical physicists postulate for the structure of matter. I am proposing a thought experiment as to postulate further what time is. Continue reading

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