Came across FB this AM. Thought I'd share the chuckle I got.
Microwave geek humor :)
- Thread starter kenmore71
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whirlcool
Well-known member
That is pretty good. One way to make sure they will get intelligent buyers.
That IS good!
Thank you for sharing.
Lawrence/Maytagbear
Thank you for sharing.
Lawrence/Maytagbear
westingman123
Well-known member
- Joined
- Jun 24, 2009
- Messages
- 1,541
But....
is it chromalicious?
is it chromalicious?
I can use that humor
At work!
Good stuff.
At work!
Good stuff.
ovrphil
Well-known member
Haha! clever.
davetranter
Well-known member
Radiation hazard
Microwave ovens are very useful, and I use mine frequently, but I never forget the advice of a good friend of mine that 'The Inverse Square Law Is Your Friend'. I turn mine on, then get as far away from it as possible while it does it's work... As he went on to say 'The only time you'll notice it's leaking is when the cataracts and cancers start growing'.
Yes, my microwave is getting on a bit, too.. It's a Samsung RE570D. I've no idea how old it is, I rescued it en-route to the tip with a faulty timer, back when only the wealthy could afford a 'microwave'.
All best
Dave T
Microwave ovens are very useful, and I use mine frequently, but I never forget the advice of a good friend of mine that 'The Inverse Square Law Is Your Friend'. I turn mine on, then get as far away from it as possible while it does it's work... As he went on to say 'The only time you'll notice it's leaking is when the cataracts and cancers start growing'.
Yes, my microwave is getting on a bit, too.. It's a Samsung RE570D. I've no idea how old it is, I rescued it en-route to the tip with a faulty timer, back when only the wealthy could afford a 'microwave'.
All best
Dave T
Radiation hazard
Indeed the inverse square law is the key. Energy density drops off with the square of the distance from the source.
Typical worst case a microwave may leak a few hundreds of milliwatts of RF distributed around the appliance. A cell phone today emits up to ~200 milliwatts and we willingly hold them AGAINST OUR HEADS for extended periods of time.
So therefore I truly hope that anyone that is ever concerned with radiation from their microwave oven, NEVER uses a cell phone!
Indeed the inverse square law is the key. Energy density drops off with the square of the distance from the source.
Typical worst case a microwave may leak a few hundreds of milliwatts of RF distributed around the appliance. A cell phone today emits up to ~200 milliwatts and we willingly hold them AGAINST OUR HEADS for extended periods of time.
So therefore I truly hope that anyone that is ever concerned with radiation from their microwave oven, NEVER uses a cell phone!
davetranter
Well-known member
Cellphones
Yes, I use one (difficult to avoid these days), but I only use it infrequently, and for as short a time as I can get away with. I don't particularly like frying my brain, it's getting old and weak enough without any assistance.... 
My concern was more with truly 'faulty' microwave shielding, as may be found on an old, and potentially abused, appliance... I have seen the destructive capabilities of a direct beam from a Magnetron.
All best
Dave T
Yes, I use one (difficult to avoid these days), but I only use it infrequently, and for as short a time as I can get away with.
I don't particularly like frying my brain, it's getting old and weak enough without any assistance.... My concern was more with truly 'faulty' microwave shielding, as may be found on an old, and potentially abused, appliance... I have seen the destructive capabilities of a direct beam from a Magnetron.
All best
Dave T
mikeklondon
New member
Testing
Can anyone tell me if you cant test a Microwave for any leakage? Mine is geting old it about 10 years now and its something I have never thought about until I saw this post. Its had very light use over the years and looks OK .
Can anyone tell me if you cant test a Microwave for any leakage? Mine is geting old it about 10 years now and its something I have never thought about until I saw this post. Its had very light use over the years and looks OK .
You can buy meters that will detect leakage.
mikeklondon
New member
Thanks
I think it's worth checking it
I think it's worth checking it
Since microwave oven design evolved away from using an RF gasket to seal the door, I don't see any likely hood that cavity isolation will decrease due to appliance aging alone. There are no moving RF seals that will degrade in performance.
If the oven was dropped or physically damaged so that the door didn't close correctly then perhaps the RF trap around the opening might become less effective. An improperly serviced appliance could be an issue too if a magnatron was replaced using a damaged or distorted RF gasket.
Microwave RF, as are all electromagnetic waves, is a form of non-ionizing radiation. High field strengths have been shown to cause health hazards but remember all forms of radiation aren't equally risky. Its not like living with a block of Uranium in your house, ionizing radiation causes far more damage. Since a microwave oven is usually run with a couple of feet of separation from the operator, the RF field strength the user encounters is minimal even if there is a small amount of leakage. It is MANY MANY times less then the field strength your cell phone delivers to the tissues of your head! Even just having a typical 802.11 WiFi access point in the same room will expose a person to more RF field strength then a microwave oven is likely to.
As Tom mentioned there are meters you can get to test your oven for leakage. The real instruments cost several hundred dollars. The ones advertised on late night TV for $19.95 have dubious accuracy. I saw one device that had you actually place the instrument(?) inside a running microwave to verify it worked. I can't imagine any inexpensive device being able to have the dynamic range required to withstand that power density and still be able to detect typical leakage. Since a device like this would never detect minor leakage I guess they do well at eliminating peoples fears of radiation from their oven...
If the oven was dropped or physically damaged so that the door didn't close correctly then perhaps the RF trap around the opening might become less effective. An improperly serviced appliance could be an issue too if a magnatron was replaced using a damaged or distorted RF gasket.
Microwave RF, as are all electromagnetic waves, is a form of non-ionizing radiation. High field strengths have been shown to cause health hazards but remember all forms of radiation aren't equally risky. Its not like living with a block of Uranium in your house, ionizing radiation causes far more damage. Since a microwave oven is usually run with a couple of feet of separation from the operator, the RF field strength the user encounters is minimal even if there is a small amount of leakage. It is MANY MANY times less then the field strength your cell phone delivers to the tissues of your head! Even just having a typical 802.11 WiFi access point in the same room will expose a person to more RF field strength then a microwave oven is likely to.
As Tom mentioned there are meters you can get to test your oven for leakage. The real instruments cost several hundred dollars. The ones advertised on late night TV for $19.95 have dubious accuracy. I saw one device that had you actually place the instrument(?) inside a running microwave to verify it worked. I can't imagine any inexpensive device being able to have the dynamic range required to withstand that power density and still be able to detect typical leakage. Since a device like this would never detect minor leakage I guess they do well at eliminating peoples fears of radiation from their oven...
firedome
Well-known member
People forget, or more likely, don't know
that a cell phone is an RF Transmitter that's directly up against their head, as well as a receiver. We use the Bell/WE land line phones whenever possible.
that a cell phone is an RF Transmitter that's directly up against their head, as well as a receiver. We use the Bell/WE land line phones whenever possible.
