CRT monitor radiation measurement project

hi im new here so hello fellas!

i'm using an old school 21 inch CRt monitor as those used in graphics industry around 6 years ago.

i was curious about how much radiation it was actually outputting.

there is an anti radiation screen in front of this with a grounding cord which goes into the ground of the electrical outlet.

i took a multimeter set it on AC 2 volts setting and it measured 300 millivolts.

now im curious if this is actually the electric radiation being measured or is this something else?

does this prove the anti radiation screen is necessary for CRT type monitor?

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one more question my 29 inch CRT TV has a 2 pronged plug and measured in the same way as above shows 40 volts... the cable box when turned on increases this 40 volts figure to around 100-200 volts fluctuating. when i touch the base of the cable box with one lead and the ground with another lead it read 90 volts.

it looks a little dangerous to me, but im not sure if im measuring the radiation or something else. i have 220 volts 50 hz power system here.

thanks.

You're confusing radiation and electrical leakage, probably also glare. Heat, light, radio waves, etc. are transmitted by radiation. But in the context of CRT TVs and monitors, the term 'radiation' usually refers to undesired and potentially harmful radiation like X-rays. The "anti-radiation" screen you have is primarily an anti-glare screen.

i took a multimeter set it on AC 2 volts setting and it measured 300 millivolts.

Click to expand...

Voltage is measured between two points. Which two points are you talking about?

now im curious if this is actually the electric radiation being measured or is this something else?

Click to expand...

No, it's not the radiation.

does this prove the anti radiation screen is necessary for CRT type monitor?

Click to expand...

No.

one more question my 29 inch CRT TV has a 2 pronged plug and measured in the same way as above shows 40 volts... the cable box when turned on increases this 40 volts figure to around 100-200 volts fluctuating. when i touch the base of the cable box with one lead and the ground with another lead it read 90 volts.

it looks a little dangerous to me, but im not sure if im measuring the radiation or something else. i have 220 volts 50 hz power system here.

Click to expand...

Again, between which points did you measure those voltages?

im using this screen in (see 3rd last pic) https://www.tigerdirect.com/applica...ffiliateID=rGMTN56tf_w-j5A6Z8LpNziDfvEGjywJuA
one end of the lead to the screen grounding cord and the other to the actual ground

Pjdd said:

Again, between which points did you measure those voltages?

Click to expand...

hope you didnt miss my answer and can shed some light on what the 300 millivac figure represents?