= About removing cataracts =

[stromberg67]

Originally Posted by Username1

I read the spec sheet this morning on the 21AXP22 and it specifically mentioned the safety glass as for radiation protection. But the PVA seems to be more suited to hazards of broken glass protection.... Thanks....

I'm curious to know which spec sheet said that the safety glass was providing protection from radiation. I have the RCA and Sylvania specs on the 21AX, and don't recall that being mentioned.
That being said, I did use a radiac meter on my CTC-4 with the 21AX, and found that with a white screen the measurement was .4 millirems per hour. According to our museums resident radiologist, that's a bit high. Not too many folks would be watching a color TV close enough to become sick with radiation poisoning. Wonder what a later glass tube would produce at 25 kilovolts. RCA reduced the second anode to 19.5 in the CTC-5, and 23.5 in subsequent chassis until rectangular and leaded glass envelopes became the norm, I believe.