The blue glow associated with intense radioactivity isn't actually the color of the metal itself, but rather a physical phenomenon called **Cherenkov radiation**. It occurs when charged particles (like electrons) travel through a dielectric medium—such as water or air—at a speed greater than the speed of light in that specific medium. This creates a "photonic shockwave" that manifests as a distinct, ghostly blue or violet light. ### Isotopes and Sources While any sufficiently powerful beta or gamma emitter can cause this effect under the right conditions, certain isotopes are most commonly associated with the "blue glow": * **Cobalt-60 (^{60}Co):** Frequently used in medical sterilization and industrial radiography. Large arrays of Cobalt-60 stored in cooling pools produce a brilliant, deep blue light. * **Cesium-137 (^{137}Cs):** A common fission product. In high concentrations, such as in the dry storage of powdered salts, it can ionize the surrounding air to produce a faint blue or purple haze. * **Actinium-227 (^{227}Ac):** This isotope is so intensely radioactive that it glows blue due to the ionization of the air around it, even in small quantities. * **Spent Nuclear Fuel:** High-level waste assemblies containing a mix of isotopes (like **Plutonium-239** and **Uranium-235**) create the iconic blue glow seen in nuclear reactor cores and spent fuel pools. ### The Science: Why Blue? The reason the light is blue rather than red or white comes down to the physics of the electromagnetic spectrum: 1. **Particle Speed:** When a particle enters a medium like water, it disrupts the local electromagnetic field. If the particle is fast enough, the atoms can't "polarize" back to their ground state fast enough, creating a shockwave. 2. **Wave Interference:** This shockwave emits light at all frequencies, but because of the way the waves interfere with each other, the intensity is much higher at shorter wavelengths. 3. **Frequency Relationship:** The intensity of Cherenkov radiation is proportional to the frequency (f). Since blue and violet light have much higher frequencies than red light, the blue end of the spectrum dominates what we see. ### Air Ionization vs. Cherenkov Radiation It is worth noting that in a **criticality accident** (a runaway nuclear chain reaction in open air), witnesses often report a "blue flash." This is slightly different from Cherenkov radiation; it is primarily **Ionized Air Glow**. The intense radiation strips electrons from nitrogen and oxygen molecules in the atmosphere. When those electrons "re-combine" with the atoms, they release energy in the form of blue and ultraviolet light, similar to how a neon sign works.

Vex "milk" --> primordial soup --> brain matter Energy output, thought, and neurons And Matterglass ((Superposition energy state)) --> matterweave --> ((expelled/expelling energy state = ???)) --> matterweave --> matterglass NLS (as non-linear space) --> quantum particle entanglement swap ((???))

Non-linear... Finding the line between the two points... You also stated or referenced another piece... 1) essentially two "particles" or beings swapping places 2) the ability to travel and communicate via quantum entanglement to past and future 3) the lines become coterminous, one replicates and moves to past, one moves to future via the entanglement caused by future to past 4) you haven't been communicating to the guardian but the player on the other side of the entangled particle 5 (name of mind that brought Cayde and Guardian together, version of failsafe(?), even though vex mind, maybe she understands things (traveler is father, or was it parent, or did she say creator))