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Facts About Hafnium | Live Science
- https://www.livescience.com/38591-hafnium.html
- Hafnium is remarkably corrosion-resistant and an excellent absorber of neutrons, allowing its use in nuclear submarines and nuclear reactor control rods, a critical technology used to maintain fission reactions. Control rods keep the fission chain reaction active but also prevent it from accelerating beyond control. Hafnium is use…
20 Interesting Facts About Hafnium - Brian D. Colwell
- https://briandcolwell.com/20-interesting-facts-about-hafnium/
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An Overview of Hafnium - Eagle Alloys Corporation
- https://www.eaglealloys.com/an-overview-of-hafnium/
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Hafnium - Wikipedia
- https://en.wikipedia.org/wiki/Hafnium
- Hafnium is a shiny, silvery, ductile metal that is corrosion-resistant and chemically similar to zirconium (due to its having the same number of valence electrons, being in the same group, but also to relativistic effects; the expected expansion of atomic radii from period 5 to 6 is almost exactly cancelled out by the lanthanide contraction).Hafnium changes from its alpha form, a …
Flashbulbs - Camera-wiki.org - The free camera …
- http://camera-wiki.org/wiki/Flashbulbs
- Origins. Before flash bulbs, flash photography relied on openly burning powder - usually containing magnesium. In 1893, Chauffour made an ancestor of the flash bulb; this had magnesium ribbon in a glass bulb, and was fired electrically- but this had been designed for underwater photography. The first recognisable flash bulb for general use was invented in …
A Brief History of the Camera Flash, From Explosive …
- https://petapixel.com/2015/10/05/a-brief-history-of-the-camera-flash-from-explosive-powder-to-led-lights/
- A photographic flash bulb. Photo by Gotanero In 1927, the first flash bulbs were produced by General Electric (some argue that they were …
Flash (photography) - Wikipedia
- https://en.wikipedia.org/wiki/Flash_(photography)
- A flash is a device used in photography that produces a brief burst of light (typically lasting 1/1000 to 1/200 of a second) at a color temperature of about 5500 K [citation needed] to help illuminate a scene. A major purpose of a flash is to illuminate a dark scene. Other uses are capturing quickly moving objects or changing the quality of light. Flash refers either to the flash …
Why do we use flash in photography? - Photography …
- https://photo.stackexchange.com/questions/29804/why-do-we-use-flash-in-photography
- Show activity on this post. The use of flash actually pre-dates electric lighting, the first flashes being entirely chemical. Nowadays the main reason for using flash is that a flash can be considerably brighter than continuous lighting because it only has to be on for a very short time (while the photo is being taken).
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