Thomas Edison Picture: Edison Picture Logo for http://www.edison.me.uk

The Frequency of Light

Picture of  light bulb. the twisting animated light bulb

   
    

 

 

 

  
   

Beyond Visible Spectrums!

These wavelength can expand from one billionth of a meter as in gamma rays, to centimetres and meters, as in radio waves. Light is one small part of the spectrum. Light waves also come in many frequencies. The frequency is the number of waves that pass a point in space during any time interval, usually one second. It is measured in units of cycles (waves) per second, or Hertz (Hz). The frequency of visible light is refer to as colour, and ranges from 430 trillion Hertz (Hz), seen as , to 750 trillion Hz, seen as violet. Again, the full range of frequencies extends beyond the visible spectrum, from less than one billion Hertz (Hz), as in radio waves, to greater than 3 billion billion Hz, as in gamma rays!

 

 

The amount of energy in a light wave is proportionally related to its frequency! High frequency light has high energy; low frequency light has low energy. Thus gamma rays have the most energy, and radio waves have the least. Of lights that are visible, violet has the most energy and the least. Light not only vibrates at different frequencies, it also travels at different speeds!

Frequencies and Energies!

Light waves move through a vacuum at their maximum speed, 186,000 miles per second, which makes light the furthermost phenomenon in the universal sphere. Light travels from the Sun to Earth in 8.5 minutes, allowing for the Sun being about 150 million Kilometres away from Earth. Light waves slow down when they travel inside substances, such as air, water, glass or  diamond. The way different substances affect the speed at which light travels is key to understanding the bending of light, or refraction. Light waves come in a continuous variety of sizes, frequencies and energies, in that visible light occupies only one thousandth of a percent of the spectrum. Probably the most common way to energise atoms is with heat, and this is the source of the incandescence light bulb. If you heat up apiece of metal with a blowtorch, it eventually becomes hot, continuous heat and the metal  gets white hot. In a hot object the atoms are just getting enough energy to begin emitting light that we can see!

Edison's Modus Operandi!

Count Eiichi Shibusawa, Kentaro Kaneko, Yukio Ozaki, Kokichi MIkimoto, Hajime Hoshi and Hideo Noguchi visited Edison to deliberate passionately not only about inventions, but international interaction between Japan and the U.S.A. In 1922, Nikon Kogyo Club known as Japan Industry Club hosted a salutation to celebrate Edison's 75th birthday, where Count Eiichi Shibusawa devised a festivity!

At the congregation, the great man Thomas Edison produced a mechanically operated birds that sat in a bird cage and offered it to the Emperor of Meiji. All who were present were struck by the sheer excellence of these two mechanical birds singing in beautiful voices with their tongues moving. Thomas Alva Edison left a number of notes and experiment results with inscription dates and signature, circulated them amongst his friends and staff, asking them to sign them in return for confirmation. This was one of Thomas Edison's modus operandi, a technique that he himself designed which enabled him to pursue and collect new knowledge in a rather inconspicuous discreet manner!

   
  

 

 
 

Website Index

    

Previous Page

Incandescent Filament Picture of Animated Forward Arrow

Next Chapter

Thomas Alva Edison Biography