Generally it is based on the positioning of the heating elements. For instance: many ovens have the heating element at the very bottom, which is why they say to put frozen pizza on the “middle rack”. While the enclosed space will make the interior MOSTLY the same temperature, there are still fluctuations based on the material being cooked as well as smaller things like how well heat stays inside.
Generally it is based on the positioning of the heating elements. For instance: many ovens have the heating element at the very bottom, which is why they say to put frozen pizza on the “middle rack”. While the enclosed space will make the interior MOSTLY the same temperature, there are still fluctuations based on the material being cooked as well as smaller things like how well heat stays inside.
A small enclosed space with a single source of heat won’t have a uniform temperature distribution; the temperature is hotter near to the active heat source. If you let the oven warm up and condition itself so that the metal walls are hot, the metal walls re-radiate heat passively into the space, creating a more even distribution. If you have a convection fan in your oven to move the air around, the temperature distribution is much more uniform.
A small enclosed space with a single source of heat won’t have a uniform temperature distribution; the temperature is hotter near to the active heat source. If you let the oven warm up and condition itself so that the metal walls are hot, the metal walls re-radiate heat passively into the space, creating a more even distribution. If you have a convection fan in your oven to move the air around, the temperature distribution is much more uniform.
Many ovens use heating elements where a significant amount of the energy transfer (particularly before the oven is at full temp) is via infrared radiation, thus the heating pattern looks more like shining a light inside a box – where are shadows and places where more light is direct, and some where it’s mostly reflected, or even relatively dim.
Once the oven is up to temperature, the whole of the “box” of the oven is also radiating heat, making the oven “light” much more uniform.
Many ovens use heating elements where a significant amount of the energy transfer (particularly before the oven is at full temp) is via infrared radiation, thus the heating pattern looks more like shining a light inside a box – where are shadows and places where more light is direct, and some where it’s mostly reflected, or even relatively dim.
Once the oven is up to temperature, the whole of the “box” of the oven is also radiating heat, making the oven “light” much more uniform.
To add, yes metal walls heating up and all that but also:
Ovens don’t get up to temp and then stay there, it works like this
Oven goes 100% until temp is reached then turns off, oven cools to what ever the lower tolerance then turns back on at full until temp is reached again, over and over heating and cooling
To add, yes metal walls heating up and all that but also:
Ovens don’t get up to temp and then stay there, it works like this
Oven goes 100% until temp is reached then turns off, oven cools to what ever the lower tolerance then turns back on at full until temp is reached again, over and over heating and cooling
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