- #1

PainterGuy

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Planck's equation is written as E=hν where "E" is energy of a photon, "h" is Planck's constant having value 6.626 070 15 x 10-34 Js, and "ν", Greek letter nu, is frequency.

Violet color has frequency range between 790–666 THz (Tera =10^12). If a violet photon of frequency 7.5 x 10^14 Hz is considered, its energy is 5 x 10^-19 Joule.

Note that frequency and wavelength are inversely proportional, if frequency increases the wavelength decreases and vice versa.

To calculate the energy of 'n' photons of same frequency, the equation could be written as E=nhν.

In the equation above, 'n' is discrete, 'h' is a constant but 'ν' is a real number which means it can

**ideally**take on any real value.

**Question 1:**Are there any lower or upper bounds on the energy of a photon? I don't think a photon could have energy of 0 J because it would mean frequency of 0 Hz and at the same time to have infinite energy the photon must have infinite energy.

**Question 2:**I've always thought of a photon as a tiny wiggly wavy packet. An EM wave with frequency 30 Hz has the corresponding wavelength of 10,000 km (longer than the radius of the Earth). Well, this is no longer tiny wiggly wavy packet. How do I visualize a photon in such a case?

Thanks in advanceHelpful links:

1: https://en.wikipedia.org/wiki/Planck_constant

2: https://simple.wikipedia.org/wiki/Planck_constant

3: /watch?v=8DjbCTjXRbg (add www.youtube.com in front)

4: https://physics.stackexchange.com/q...the-highest-possible-frequency-for-an-em-wave