Visibility inside microwave oven
 

Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

Bill

Visibility inside microwave oven
 

williamwright wrote:
Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

Bill


Take the door off and poke a pencil or something in all the nanny state
interlocks. ;-)

A new bulb helps too. ;-)

Tim

--
Please don't feed the trolls

Visibility inside microwave oven
 

williamwright wrote:

Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

"How to film the inside of a microwave (2 ways)"

https://youtu.be/8bXhsUs-ohw

Visibility inside microwave oven
 

williamwright wrote:
Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

Bill

Get the physics department at the local university involved ?

As a human, you have stereoscopic vision, and looking through
the microwave cutoff filter in the door of the microwave,
you can reconstruct a rough idea of what is on the other side.
As long as the microwave light bulb is still working.

Using more cameras (webcams), you should be able to do better
than human visual quality.

Start with some ray tracing, to get some idea where to
place the cameras (precise to millimeter offsets). The
cameras you set up on your optics bench placed next to the
microwave door, will have some relationship to the spacing
of the holes on the door. You may not get enough overlap,
with sloppy or random webcam placement.

*******

And to relate a story about this.

Some time ago, the light bulb in my Panasonic microwave burned
out. Fine so far.

Fast forward. I'd been noticing that some microwave cooking
runs now, were burning spots of stuff on the cookware. I
decided to shine a LED flashlight through the cutoff filter,
for a look.

And the damn turntable had stopped rotating. Which explains
why the food was not cooking evenly.

So yes, kids, there is value to looking inside, at
what is going on :-) It's not always magical in there,
and sometimes your luck runs out.

Maybe that microwave we had decades ago, with no turntable,
and requiring a windup microwave turntable, wasn't such
a bad idea after all. That thing never had any plastic bits
fail on it. There was always a scowl on family members faces,
having to wind up the turntable gadget (which sits on the
floor of the microwave cavity), before each usage, to get
uniform cooking. The alternative, is the poorly designed
modern motorized version. Which fails soon after the lightbulb
burns out.

Paul

Visibility inside microwave oven
 

On 09/03/2021 02:23, Paul wrote:
williamwright wrote:
Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

Bill

Get the physics department at the local university involved ?

As a human, you have stereoscopic vision, and looking through
the microwave cutoff filter in the door of the microwave,
you can reconstruct a rough idea of what is on the other side.
As long as the microwave light bulb is still working.

Using more cameras (webcams), you should be able to do better
than human visual quality.

Start with some ray tracing, to get some idea where to
place the cameras (precise to millimeter offsets). The
cameras you set up on your optics bench placed next to the
microwave door, will have some relationship to the spacing
of the holes on the door. You may not get enough overlap,
with sloppy or random webcam placement.

*******

And to relate a story about this.

Some time ago, the light bulb in my Panasonic microwave burned
out. Fine so far.

Fast forward. I'd been noticing that some microwave cooking
runs now, were burning spots of stuff on the cookware. I
decided to shine a LED flashlight through the cutoff filter,
for a look.

And the damn turntable had stopped rotating. Which explains
why the food was not cooking evenly.

So yes, kids, there is value to looking inside, at
what is going on :-) It's not always magical in there,
and sometimes your luck runs out.

Maybe that microwave we had decades ago, with no turntable,
and requiring a windup microwave turntable, wasn't such
a bad idea after all. That thing never had any plastic bits
fail on it. There was always a scowl on family members faces,
having to wind up the turntable gadget (which sits on the
floor of the microwave cavity), before each usage, to get
uniform cooking. The alternative, is the poorly designed
modern motorized version. Which fails soon after the lightbulb
burns out.

Â*Â* Paul

The modern version is one without a turntable.

Visibility inside microwave oven
 

Well its a tuned cavity so I'd have thought the problem is both of leakage
of the output if you are near it, and the detuning of things if the door
mesh was removed. I don't know what lights are in them, one assumes they are
old fashioned filament lamps or they would be fried.
Same goes for an endoscope camera through a convenient holed made
somewhere.
Brian

--

This newsgroup posting comes to you directly from...
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Blind user, so no pictures please
Note this Signature is meaningless.!
"williamwright" wrote in message
...
Is there any way of getting a clear view of the inside of a microwave oven
when it's working?

Bill

Visibility inside microwave oven
 

I had one without a turntable once, completely useless. It claimed to have a
rotating aerial, but this ended up having cold and hot spots all over the
place due to standing waves.
Brian

--

This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Richard" wrote in message
...
On 09/03/2021 02:23, Paul wrote:
williamwright wrote:
Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

Bill

Get the physics department at the local university involved ?

As a human, you have stereoscopic vision, and looking through
the microwave cutoff filter in the door of the microwave,
you can reconstruct a rough idea of what is on the other side.
As long as the microwave light bulb is still working.

Using more cameras (webcams), you should be able to do better
than human visual quality.

Start with some ray tracing, to get some idea where to
place the cameras (precise to millimeter offsets). The
cameras you set up on your optics bench placed next to the
microwave door, will have some relationship to the spacing
of the holes on the door. You may not get enough overlap,
with sloppy or random webcam placement.

*******

And to relate a story about this.

Some time ago, the light bulb in my Panasonic microwave burned
out. Fine so far.

Fast forward. I'd been noticing that some microwave cooking
runs now, were burning spots of stuff on the cookware. I
decided to shine a LED flashlight through the cutoff filter,
for a look.

And the damn turntable had stopped rotating. Which explains
why the food was not cooking evenly.

So yes, kids, there is value to looking inside, at
what is going on :-) It's not always magical in there,
and sometimes your luck runs out.

Maybe that microwave we had decades ago, with no turntable,
and requiring a windup microwave turntable, wasn't such
a bad idea after all. That thing never had any plastic bits
fail on it. There was always a scowl on family members faces,
having to wind up the turntable gadget (which sits on the
floor of the microwave cavity), before each usage, to get
uniform cooking. The alternative, is the poorly designed
modern motorized version. Which fails soon after the lightbulb
burns out.

Paul

The modern version is one without a turntable.

Visibility inside microwave oven
 

Brian Gaff (Sofa) wrote

Well its a tuned cavity

No it not and cant be given that you put different stuff in it.

so I'd have thought the problem is both of leakage of the output if you
are near it, and the detuning of things if the door mesh was removed. I
don't know what lights are in them, one assumes they are old fashioned
filament lamps or they would be fried.

Or they have metal mesh in front of them.

Same goes for an endoscope camera through a convenient holed made
somewhere.

The youtube has a hole in the metal mesh
that the camera outside looks thru.

"williamwright" wrote in message
...
Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

Bill

Visibility inside microwave oven
 

Brian Gaff (Sofa) wrote

I had one without a turntable once, completely useless.
It claimed to have a rotating aerial, but this ended up having
cold and hot spots all over the place due to standing waves.

Mine does have a turntable but that failed and I have
been too lazy to fix it and it works fine anyway.

"Richard" wrote in message
...
On 09/03/2021 02:23, Paul wrote:
williamwright wrote:
Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

Bill

Get the physics department at the local university involved ?

As a human, you have stereoscopic vision, and looking through
the microwave cutoff filter in the door of the microwave,
you can reconstruct a rough idea of what is on the other side.
As long as the microwave light bulb is still working.

Using more cameras (webcams), you should be able to do better
than human visual quality.

Start with some ray tracing, to get some idea where to
place the cameras (precise to millimeter offsets). The
cameras you set up on your optics bench placed next to the
microwave door, will have some relationship to the spacing
of the holes on the door. You may not get enough overlap,
with sloppy or random webcam placement.

*******

And to relate a story about this.

Some time ago, the light bulb in my Panasonic microwave burned
out. Fine so far.

Fast forward. I'd been noticing that some microwave cooking
runs now, were burning spots of stuff on the cookware. I
decided to shine a LED flashlight through the cutoff filter,
for a look.

And the damn turntable had stopped rotating. Which explains
why the food was not cooking evenly.

So yes, kids, there is value to looking inside, at
what is going on :-) It's not always magical in there,
and sometimes your luck runs out.

Maybe that microwave we had decades ago, with no turntable,
and requiring a windup microwave turntable, wasn't such
a bad idea after all. That thing never had any plastic bits
fail on it. There was always a scowl on family members faces,
having to wind up the turntable gadget (which sits on the
floor of the microwave cavity), before each usage, to get
uniform cooking. The alternative, is the poorly designed
modern motorized version. Which fails soon after the lightbulb
burns out.

Paul

The modern version is one without a turntable.

More Heavy Trolling by Senile Nym-Shifting Rodent Speed!
 

On Tue, 9 Mar 2021 19:52:41 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the trolling senile asshole's latest troll**** unread

--
Sqwertz to Rodent Speed:
"This is just a hunch, but I'm betting you're kinda an argumentative
asshole.
MID:

Visibility inside microwave oven
 

On Tuesday, 9 March 2021 at 08:52:54 UTC, Rod Speed wrote:
Brian Gaff (Sofa) wrote
Well its a tuned cavity
No it not and cant be given that you put different stuff in it.

The operating frequency isn't stable either. If you put something
in which is off-centre, the frequency sweeps up and down the
ISM band as the turntable rotates.

John

Visibility inside microwave oven
 

When was once?

On 09/03/2021 07:49, Brian Gaff (Sofa) wrote:
I had one without a turntable once, completely useless. It claimed to have a
rotating aerial, but this ended up having cold and hot spots all over the
place due to standing waves.
Brian

Visibility inside microwave oven
 

Paul wrote:
Is there any way of getting a clear view of the inside of a microwave
oven when it's working?
As a human, you have stereoscopic vision, and looking through
the microwave cutoff filter in the door of the microwave,
you can reconstruct a rough idea of what is on the other side.
As long as the microwave light bulb is still working.

Moving your head from side to side can help here, as
your brain can remember the views through the gaps in
the mesh and join them together.

#Paul

Visibility inside microwave oven
 

On 09/03/2021 18:31, Richard wrote:
When was once?

On 09/03/2021 07:49, Brian Gaff (Sofa) wrote:
I had one without a turntable once, completely useless. It claimed to
have a
rotating aerial, but this ended up having cold and hot spots all over the
place due to standing waves.
Â* Brian



My first microwave oven was a Phillips, bought in 1986.
It didn't have a turntable and had just one electromechanical
timer that you turned to the desired number of minutes and
it buzzed back to zero. No power or other fancy settings settings.

Visibility inside microwave oven
 

On 09/03/2021 07:49, Brian Gaff (Sofa) wrote:
I had one without a turntable once, completely useless. It claimed to have a
rotating aerial, but this ended up having cold and hot spots all over the
place due to standing waves.
Brian

They should have a wave stirrer to break up any standing waves.
Perhaps the bit that was supposed to move had failed in your unit.

My microwave/combi oven doesn't have a turntable and works very well.

More interestingly it has a clever log spaced wire metal shelf that it
will still work quite happily with inside the oven. I suspect it can
either recognise the loading and adjust power levels accordingly to
compensate. I almost never run it at maximum power.

It can also do combinations of grilling or hot air with microwave too.

Oven chips by weight program mode does some very odd combination.

--
Regards,
Martin Brown

Visibility inside microwave oven
 

On 10/03/2021 13:11, Martin Brown wrote:
On 09/03/2021 07:49, Brian Gaff (Sofa) wrote:
I had one without a turntable once, completely useless. It claimed to
have a
rotating aerial, but this ended up having cold and hot spots all over the
place due to standing waves.
Â* Brian

They should have a wave stirrer to break up any standing waves.
Perhaps the bit that was supposed to move had failed in your unit.

My microwave/combi oven doesn't have a turntable and works very well.

Make /model ?. My wonderful Sharp, stopped working as a microwave at
17 years old and the brand name has been sold to a Turkish company.

Visibility inside microwave oven
 

On 08/03/2021 17:24, williamwright wrote:
Is there any way of getting a clear view of the inside of a microwave
oven when it's working?

Bill
Over the years I accumulated quite a lot of dead compact fluorescent
lamps.

You discard the electronics.
You put at least 20 bulbs in a clear plastic bag.
You put the bag on the turn table.
You get a good idea of the energy distribution inside.
Some fun too :-)