Energy of a photon E=hc/λ is inversely proportional to wavelength.
For Gamma rays, energy is delivered in large energy bundles are a few MeV each.
For visible light, energy is delivered by photons that each carries a few eV.
Microwave photons are tiny energy bundles of a few μeV each.
In this comic, Gamma rays, visible light and microwave foot their bill with a million-dollar note, dollar notes, and petty coins respectively. Haha.
xmComic 