Naked Science Forum

On the Lighter Side => Science Experiments => Topic started by: thedoc on 23/09/2014 06:30:01

Title: Does the colour of a baking tray cause a pizza to heat up faster?
Post by: thedoc on 23/09/2014 06:30:01

Daniel Weyandt asked the Naked Scientists:
   
Please help us resolve a bet.

When recently making Pizza a friend insisted his black baking tray would transmit heat faster than the aluminium coloured one.

While everyone knows, that black sheet metal warms up more quickly in the sun, the issue of light absorption does not apply to the baking oven?

Let's assume, they are both made of aluminium and of equal thickness, same height etc.

Thanks
Daniel

What do you think?

Title: Re: Does the colour of a baking tray cause a pizza to heat up faster?
Post by: RD on 26/09/2014 16:01:40

If blackened by carbon (http://www.cancarb.com/thermal-carbon-black/applications/hightemp.html) deposits, that black-layer would act as a thermal-insulator, slowing the conduction of heat to the pizza base, when compared to a carbon-free aluminium (http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html) tray.