You know what's the difference between a vacuum tube TV and a modern flat panel TV?
A vacuum tube TV heats up faster than a modern flat panel TV boots up.
@pavel I was at Karlov Physical laboratories of the Faculty of Math and Physics on a day of open doors and they had an X-ray detector and I asked them to measure the X-rays from ther CRT monitor and they said it's pointless because the lead glass absorbs most and the rests is absorbed in the air between the CRT and the user so there would be nothing left anyway.
@pavel The unmeasurability of X-rays from a CRT is further confirmed by Food and Drug Administration (FDA): "most TV sets have not been found to give off any measurable level of radiation" https://www.fda.gov/radiation-emitting-products/resources-you-radiation-emitting-products/television-radiation#2