What's in a CRT?
Minerals make it happen!
Function
The primary function of a CRT is to convert an electrical signal into a visual display.
What are Cathode-Ray Tubes and are they still used in televisions?
A CRT (cathode-ray tube) emits electron beams that are controlled to display images on a phosphorescent screen. A Crt is also called a picture tube.
When were CRT t.v's popular?
CRTs were once synonymous with television. By 1960, nearly 90 percent of American households had one. But at the turn of the millennium, their popularity rapidly decayed as LCD panels flooded the market.
In which part of the CRT T.V are these elements in?
Alumniun
Aluminum is used in the picture tube of a T.V. It is made of precision glass that is shaped to have a slightly curved plate at the front or screen. When the tube is manufactured a coating is then overlaid with a thin film of aluminum that lets electrons pass through. The aluminum serves as a mirror to prevent light from bouncing back into the tube.
Strontium
"Strontium carbonate was used in faceplate glass to block X-ray emissions from colour cathode ray tubes (CRTs) in older-model televisions." 75% of the US strontium usage was used in CRTs, but as the new technology of flat panel display rose, there has been a massive decline in the strontium industry.
Nickel
According to carpentertechnolog, Nickel is used for alloys that minimize cryogenic shrinkage. For example, a 36% nickel-iron alloy is used more recently for shadow masks in high-definition CRT (television) tubes.
Works/Images Cited
Robertson, A. (2018, February 6). Inside the desperate fight to keep old TVs alive. The Verge; The Verge. https://www.theverge.com/2018/2/6/16973914/tvs-crt-restoration-led-gaming-vintage
Cathode Ray Tube - an overview | ScienceDirect Topics. (n.d.). Www.sciencedirect.com. Retrieved March 9, 2023, from https://www.sciencedirect.com/topics/engineering/cathode-ray-tube#:~:text=The%20function%20of%20the%20cathode
Chodorow, Marvin, and Joan Yater. “Cathode Ray Tube - an Overview | ScienceDirect Topics.” Www.sciencedirect.com, www.sciencedirect.com/topics/engineering/cathode-ray-tube#:~:text=The%20function%20of%20the%20cathode. Accessed 9 Mar. 2023.
“Facts about Strontium.” Live Science, Live Science, 20 May 2013, www.livescience.com/34522-strontium.html. Accessed 9 Mar. 2023.
Ober, Joyce. “Mineral Resource of the Month: Strontium.” Www.earthmagazine.org, US Geological SurveyJoyce Ober, 8 Dec. 2014, www.earthmagazine.org/article/mineral-resource-month-strontium/#:~:text=Strontium%20carbonate%20was%20used%20in. Accessed 10 Mar. 2023.