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From: Androcles on 27 Nov 2009 15:25
A "gobstopper" or "jawbreaker" is a ball of hard sugar (candy)
which has shells (like an onion) of different colours.
Apparently when one of these is placed in a microwave oven
the green layer will melt, and the child who bites down on it
is seriously burnt.
Being primarily for entertainment, the TV show "Mythbusters"
made a big deal of welding some steel "teeth" to an artificial
"mouth" and biting into one of these sugar balls and indeed
two of the team were hurt by the splashed hot liquid sugar.
What is interesting is why the green layer absorbed the energy
from the microwave.
Any comments?


From: Mark Thorson on 27 Nov 2009 15:49
Androcles wrote:
>
> What is interesting is why the green layer absorbed the energy
> from the microwave.
> Any comments?

Maybe it had more water in it
than the other layers.
From: Uncle Al on 27 Nov 2009 16:29
Androcles wrote:
>
> A "gobstopper" or "jawbreaker" is a ball of hard sugar (candy)
> which has shells (like an onion) of different colours.
> Apparently when one of these is placed in a microwave oven
> the green layer will melt, and the child who bites down on it
> is seriously burnt.
> Being primarily for entertainment, the TV show "Mythbusters"
> made a big deal of welding some steel "teeth" to an artificial
> "mouth" and biting into one of these sugar balls and indeed
> two of the team were hurt by the splashed hot liquid sugar.
> What is interesting is why the green layer absorbed the energy
> from the microwave.
> Any comments?

Don't buy a microwave large enough to hold a child. Don't microwave
jawbeakers. SAVE OUR CHILDREN with emergency Federal legislation and
drafted Combat Confectioners toting AA12 tactical shotguns loaded with
40-round drums of #00 Buck 12 gm/cm^3 tungsten-bronze-iron Hevi-shot.

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz4.htm
From: Cwatters on 28 Nov 2009 11:13

"Androcles" <Headmaster(a)Hogwarts.physics_q> wrote in message
news:1BWPm.35026$Z_5.25361(a)newsfe10.ams2...
>A "gobstopper" or "jawbreaker" is a ball of hard sugar (candy)
> which has shells (like an onion) of different colours.
> Apparently when one of these is placed in a microwave oven
> the green layer will melt, and the child who bites down on it
> is seriously burnt.
> Being primarily for entertainment, the TV show "Mythbusters"
> made a big deal of welding some steel "teeth" to an artificial
> "mouth" and biting into one of these sugar balls and indeed
> two of the team were hurt by the splashed hot liquid sugar.
> What is interesting is why the green layer absorbed the energy
> from the microwave.
> Any comments?
>
>

Vids on you-tube suggest it depends on the make. With some types all the
layers appear to melt.

They are made from sugar and Google suggests sugar absorbs microwaves
(although opinions seem to differ).

http://www.gamamicrowave.com/sheet6.html

"Sugar is a very good absorber of microwave energy. For example, high sugar
jam or fruit-filled pie fillings can easily reach temperatures sufficient to
burn a person�s mouth, even though the pastry exterior may appear relatively
cold. Never-the-less, sugar can be used to balance the heating effects of
poor microwave absorbing components within microwaveable deserts and
puddings. "


From: Androcles on 28 Nov 2009 13:38

"Cwatters" <colin.wattersNOSPAM(a)TurnersOakNOSPAM.plus.com> wrote in message
news:0J6dnWX5xsa20YzWnZ2dnUVZ8jidnZ2d(a)brightview.co.uk...
>
> "Androcles" <Headmaster(a)Hogwarts.physics_q> wrote in message
> news:1BWPm.35026$Z_5.25361(a)newsfe10.ams2...
>>A "gobstopper" or "jawbreaker" is a ball of hard sugar (candy)
>> which has shells (like an onion) of different colours.
>> Apparently when one of these is placed in a microwave oven
>> the green layer will melt, and the child who bites down on it
>> is seriously burnt.
>> Being primarily for entertainment, the TV show "Mythbusters"
>> made a big deal of welding some steel "teeth" to an artificial
>> "mouth" and biting into one of these sugar balls and indeed
>> two of the team were hurt by the splashed hot liquid sugar.
>> What is interesting is why the green layer absorbed the energy
>> from the microwave.
>> Any comments?
>>
>>
>
> Vids on you-tube suggest it depends on the make. With some types all the
> layers appear to melt.
>
> They are made from sugar and Google suggests sugar absorbs microwaves
> (although opinions seem to differ).
>
> http://www.gamamicrowave.com/sheet6.html
>
> "Sugar is a very good absorber of microwave energy. For example, high
> sugar jam or fruit-filled pie fillings can easily reach temperatures
> sufficient to burn a person�s mouth, even though the pastry exterior may
> appear relatively cold. Never-the-less, sugar can be used to balance the
> heating effects of poor microwave absorbing components within
> microwaveable deserts and puddings. "


Ok, but that doesn't explain why one sugar ball should have the
property that just one of its shells should melt if all the shells are
sugar,
and that is what happens AFAICT from the program.
If, for example, all the shells were pastry except the sugar shell I
wouldn't be asking the question, but if all the shells are sugar there
has to be some other cause for the green shell (and not the others)
to melt in the microwave chamber.
I seriously believe this should be investigated further, because it
seems that is not the sugar but the green dye that is absorbing the
radiation.



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