#light spectrum

Self made rainbow

Do Now:

Electromagnetic Radiation exists on a spectrum, just like gender. Indeed, it can be divided into three segments (seen left to right in the image below)

Infrared - low energy, large wavelength (radio, microwave, heat)

Visible Light - the very short range of wavelengths that human eye cells can detect, (red, orange, yellow, green, blue, violet)

Ultraviolet - high energy, short wavelength (X-ray, gamma rays, and UV light obviously)

But which gender is more like which segment of the EM spectrum? Consider these three possible models.

1.

2.

3.

Example arguments below the cut

Table of Spectra. Spectrum analysis in its application to terrestrial substances, and the physical constitution of the heavenly bodies. 1872.

"The phytoplankton that populate oceans are known to play a key role in marine ecosystems and climate regulation. Like terrestrial plants, they store atmospheric CO₂, and produce half of our planet's oxygen via photosynthesis. However, the mechanisms that control their distribution remain poorly understood.

By studying the light perception process of diatoms, a group of phytoplankton, scientists from the CNRS and Sorbonne University discovered that these microalgae use light variation sensors which are codified in their genomes: phytochromes.

These photoreceptors enable them to detect changes in the light spectrum in the water column, thereby providing information regarding their vertical position within it. This function is especially important in turbulent aquatic environments subject to substantial water mixing—such as high latitude, temperate, and polar regions—in order to adjust their biological activity, in particular photosynthesis."

Minute Earth including Hestu in this tree graph added a few minutes to my lifespan.

Video here. It was very interesting.