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  2. Creating Pink Sterling Silver: Chemistry and Heat Treatment...

    www.physicsforums.com/threads/creating-pink-sterling-silver-chemistry-and-heat...

    Pink sterling silver is created through a process called heat treatment. The silver and copper are melted together at high temperatures, then rapidly cooled to form a solid alloy. This process allows for the copper atoms to evenly disperse throughout the silver, creating the pink color. 3.

  3. Understanding FTIR Peaks of PO4 Compounds - Physics Forums

    www.physicsforums.com/threads/understanding-ftir-peaks-of-po4-compounds.911279

    Understanding the FTIR peaks of PO4 compounds is important because it can provide valuable information about their chemical structure and interactions. The most common FTIR peaks for PO4 compounds are the stretching vibrations of P-O bonds at around 1100-1200 cm-1 and the bending vibrations of P-O bonds at around 600-700 cm-1.

  4. Aurora Forecast - Geophysical Institute

    www.gi.alaska.edu/monitors/aurora-forecast

    The aurora is most often seen as a striking green, but it also occasionally shows off other colors, ranging from red to pink or blue to purple. Oxygen at about 60 miles up gives off the familiar green-yellow color, while oxygen at higher altitudes (about 200 miles above Earth’s surface) gives all-red auroras.

  5. Why Does the Pink Color in a Titration Fade Over Time? - Physics...

    www.physicsforums.com/threads/why-does-the-pink-color-in-a-titration-fade-over...

    Hcl Titration. In summary, the pink color obtained from the 2-3 phenolphthalein indicator at the end point of the titration gradually disappears over time due to the absorption of CO2 from the air, which produces the weak acid HCOOOH. This results in a drop in pH and the color of phenolphthalein is dependent on the pH of the solution.

  6. Laptop screen flickering/moving up and down with pink tint

    www.physicsforums.com/threads/laptop-screen-flickering-moving-up-and-down-with...

    A pink tint on a laptop screen is usually caused by a faulty or damaged screen or graphics card. It could also be due to a defective cable or connection between the screen and the laptop. In some cases, it may be a software issue that can be resolved by adjusting the color settings on your laptop.

  7. What do the blue and pink color of the rust indicator shown mean?

    www.physicsforums.com/threads/what-do-the-blue-and-pink-color-of-the-rust...

    Green18. Oct 12, 2014. Color Mean Rust. In summary, the blue and pink colors the rust indicator shown mean that the tip, head region of the nail appears blue color; the straight region appears pink color. The blue area shows that the rusting has already taken place, while the pink area means it is going to form rust. Oct 12, 2014.

  8. Really simple mistake in this combinatorics problem? - Physics...

    www.physicsforums.com/threads/really-simple-mistake-in-this-combinatorics...

    I would look at it this way. There are 8! possible outcomes. Half have Blue Ahead of Teal and the other half have Teal Ahead of Blue. So that constraint reduces this to 8!/2. Half of the remaining ones have Pink Ahead of Gray and the other half have Gray ahead of Pink. So that reduces it to 8!/4. And so on.

  9. Plasma Color: What Makes It Blue & What Colors It Can Be? -...

    www.physicsforums.com/threads/plasma-color-what-makes-it-blue-what-colors-it...

    Plasma is the fourth state of matter, after solids, liquids, and gases. It is a highly ionized gas composed of free electrons and positive ions. The blue color of plasma comes from the specific wavelength of light emitted when the electrons and ions recombine. 2.

  10. Why does a Walrus Blush? - Geophysical Institute

    www.gi.alaska.edu/alaska-science-forum/why-does-walrus-blush

    The skin of walruses becomes pallid when it is exposed to cold air or water and changes to pink when exposed to warmer ambient temperatures. This color change may indicate that the circulatory output to the skin is altered to control their total body heat loss. Within their skin, arterio-venous anastomoses (AVAs), or connections between small ...

  11. Water detection stickers on cell phones? - Physics Forums

    www.physicsforums.com/threads/water-detection-stickers-on-cell-phones.231671

    Water detection stickers contain a small indicator strip that changes color when it comes in contact with liquid. The strip is made of a material that reacts to water and changes color when it absorbs moisture. This color change is permanent and can indicate that the phone has been exposed to water. 3.