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UV light causes fading of color = UV changes frequencies of light

Discussion in 'Redox Rx' started by Jack Kruse, May 13, 2021.

  1. Jack Kruse

    Jack Kruse Administrator

    The colors we see are based upon these chemical bonds and the amount of light that is absorbed in a particular wavelength. Photodegradation means sunlight has the ability to alter the frequencies of reflected light from colored objects.

    Fading has two main causes. The first is chemical, where chemical changes in the coloring agents of material can cause a change (or reduction) in color. Chemical reactions that lead to fading can be influenced by many environmental factors, such as the type of coloring agent/chemical, the chemical environment of each coloring agent in the material, the ambient chemical environment of the material, and the temperature, humidity, and radiation environment. In addition, wear or abrasion can physically remove coloring agents from a material's surface.

    Radiated energy, or radiation, is given off by many objects: a light bulb, a crackling fire, and stars are some examples of objects which emit radiation. The type of radiation being emitted depends on the temperature of the object. A coal glowing red in a barbecue is cooler than our Sun, which appears yellow, which is cooler still than some stars which appear bright white.

    If a prism is used to break up the radiated light from an object into its component colors, the "visible light" which our eyes can see makes up only a small part of the total spectrum. Visible light runs from the familiar blue to green to yellow to orange to red. Red light is the least energetic of the colors of visible light, and blue is the most energetic. Beyond the red end of the visible part of the spectrum lies the infrared and radio radiation. Infrared "light" is familiar to us as heat, while radio waves are used for TV and radio broadcasts.

    Beyond the blue end of the visible spectrum lies ultraviolet light, X-rays, and gamma-rays. All of the X-rays, gamma-rays, and ultraviolet light emitted by stars are absorbed by the Earth's atmosphere. That is why we need to send our telescopes into space (such as Astro-2 !) in order to measure the ultraviolet light from stars and galaxies. Many scientists are interested in studying the invisible universe of ultraviolet light since the hottest and most active objects in the universe give off large amounts of ultraviolet energy.

    The sun's energy is made up of three distinct spectral components: ultraviolet radiation, visible radiation, and near-infrared radiation. What distinguishes these from one another is the wavelength ranges that characterize them, commonly measured in nanometers (nm). A nanometer is very small. A human hair is over 100,000 nanometers thick.

    Ultraviolet radiation is invisible to the human eye and has the shortest wavelengths of the three types mentioned, from 300 to about 380 nm. Visible light covers the approximate range from 380 to 780 nm, while near-infrared radiation (sometimes called invisible solar heat) has the longest wavelengths, from 780 to 4045 nm.
    Ultraviolet radiation (UV) is the single largest contributing factor in fading of fabrics, carpets, and other furnishings. Although visible light, electric lighting, heating, humidity, age of fabrics, and fabric dyes all play a part in the process, UV radiation is attributed to 40% of the damage. Protecting against UV is not just important in hot, sunny climates. Even in cold, cloudy climates, UV radiation can damage furnishings.

    It is all about the chemical makeup of an object. The technical term for color fading is photodegradation. There are light-absorbing color bodies called chromophores that are present in dyes. The atoms in the compounds are the key to the color and frequencies they absorb and reflect.

    Ultraviolet rays are one of the causes of fading because they can break down chemical bonds and fade the color in an object. Other major contributors to fading include visible light and solar heat.

    Some objects may be more prone to this bleaching effect, such as dyed textiles and watercolors. Other objects may reflect the light more, which makes them less prone to fade. This is why plants maintain their vibrant colors in summer.

    Alex97232 and John Schumacher like this.
  2. Experimentation can have multiple errors; some have to do with timing, specifically measurement accuracy within 0.5 nanoseconds. Dr. Robert Laughlin with others published in 1999 a light scattering technique to help resolve picosecond resolution issues.

    Quantum phase transitions (QPTs) are usually associated with many-body systems in the thermodynamic limit when their ground states are disrupted.
    When a “control parameter”, such as the external magnetic field is scanned across a quantum critical point, the ground state of the system changes abruptly, characterized by a spontaneous symmetry breaking or a change in the topological order. https://www.nature.com/articles/s41467-021-21425-8 Feb 2021

    So why may these discoveries be important when we study light and human biology? - perhaps one of the answers is time…

    When we better measure our results from a quantum experiment and this data does not support our current quantum model of particle theory, instead of reforming the same assumptions, we may do better to ask better questions as to why light continually reveals itself as a wave.

    Quantum physicist Dr Robert Laughlin holds multiple Nobel Prizes says in his book “A Different Universe – Reinventing Physics from the Bottom Down” suggest we investigate the emergent results and ask why may that had happen. In chapter “The Fabric of Space-Time” he writes, “Real light, like real quantum-mechanical sound, differs from it idealized Newtonian counterpart in containing energy even when it is stone cold. According to the principle of relativity, this energy should have generated mass, and this, in turn, should have generated gravity. We have no idea why it does not, so we deal with the problem the way a government might, namely simply declaring empty space not to gravitate. “… The idea that space might contain a kind of material substance which interacts with electromagnetic waves such that we can measure its results -> is heresy within dogmatic quantum theory. However, Dr Robert Laughlin argues this should be the direction of thought and experimentation.

    Ok fine – so what if light is a wave rather than our current quantum theory? This may mean we can turn our attention to -> Absorption, Capacitance and Emission of the wave.

    How about water for example? -> https://forum.jackkruse.com/index.php?posts/295958
    How about microtubules in human cells? -> https://forum.jackkruse.com/index.php?posts/295973
    How about hormones? -> https://forum.jackkruse.com/index.php?posts/296168
    Last edited: May 14, 2021

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