davidstarlingm wrote:When I look at my girlfriend's face while we are standing outside under a broad spectrum of photons:
- Radio wavelengths and microwaves have much broader wavefunctions than the wavefunction of her skin, so those photons pass through her body unnoticed; she is radiotransparent. That's okay, though; my eyes can't see radio wavelengths.
- Her skin forms destructive interference with the wavefunctions of most high-energy green and blue photons, absorbing it by electron excitation. This energy is diffused as heat, which is why she feels warmer by standing in the sun.
- Her skin forms constructive interference with most other photons in the visible spectrum, scattering them under diffuse reflection. These photons reach my eyes; this is the color I see. She is flushed, and the blood rushing to her face absorbs a little bit of the yellow light that would otherwise be reflected, giving her a slightly more pink color in her cheeks.
- A few of the green photons in the 525 nm range are absorbed (destructive interference and excitation) by the sodium atoms in her skin. These atoms build up the energy and release it as lower-wavelength photon (in the golden yellow wavelength range) fluorescence; this makes her skin appear to glow in the sunlight.
- The thin coating of tears lubricating the surface of her eyes forms constructive interference with almost all photons in the visible spectrum; because of hydrogen bonding, the wavefunctions scatter light evenly under specular reflection, allowing me to see myself and the entire landscape behind me in her eyes.
- Her skin is a little darker than mine, so the melanin in her skin forms constructive interference with ultraviolet photons, reflecting them away from her body diffusely. My skin will not fare so well; it forms destructive interference with ultraviolet light, absorbing it by excitation and heat transfer, and giving me a sunburn if I stay out in the sun all day.
Of course, I don't mention any of these things to her at the time, because when I look at her, I'm thinking about chemistry, not physics.
This is the most XKCD-like post I have ever seen on these forums. You should find a way to convert it into comic form.