Anyone hear the old myth that a CRT could implode if damaged?

[WISCOJIM]

Originally Posted by Benjamin3000

Now, I know the actual screen is pretty thick to be able to handle the vacuum in the first place, and I've heard of them surviving a lot more abuse than an unprotected LCD ever could.

Your premise that the front glass is thick to handle the vacuum is false. If thick glass were needed, the rest of the CRT including the neck would also have to be thick.

Have any of you actually seen one violently shatter, more so than a regular glass thing? Did it take a deliberate effort to do so or was it something that could have reasonably happened by accident?

A friend was in a house where one imploded, and her parents had to remove the shag carpet as they were afraid of not being able to get all the glass shards out of it. The children playing in that room never confessed to what they may have done to cause it.

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[jr_tech]

Originally Posted by WISCOJIM

Your premise that the front glass is thick to handle the vacuum is false. If thick glass were needed, the rest of the CRT including the neck would also have to be thick.

So why do large screen CRTs have thick front glass?

jr

[WISCOJIM]

Originally Posted by jr_tech

So why do large screen CRTs have thick front glass?

jr

https://www.google.com/search?q=why+...hrome&ie=UTF-8

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[old_tv_nut]

Originally Posted by WISCOJIM

Your premise that the front glass is thick to handle the vacuum is false. If thick glass were needed, the rest of the CRT including the neck would also have to be thick.

Note quite right. The bell, being more arched, can withstand greater compressive force for a given thickness. The faceplate, being flatter, is compressed by the band to make sure that the stress is compressive even in the center, but that means that the compressive stress is even greater at the periphery. If the tube were a sphere, the stress would be equal and compressive everywhere rather than being stronger some places so that the places where it is minimum never become tensile, even with some impact force.