- #1
rmshepherd
- 12
- 0
my sister asked for help with a science test she had as preperation for her gcse's
in this test was a table asking about heat transfer in a vacuum flask some parts of the table were filled in as an example but the question was would heat be lost through
A convection
B conduction
C radiaton
for different parts of the flask
acording to the examples in the table heat would be lost via the vacuum by convection and conduction
i told my sister that this was BS as a perfect vacuum canot conduct or convex heat at all i know a thermos flask is not a perfect vacuum but the diagram of a flask was labled only vacuum was i wrong to tell my sister this or was the example answers bs as i had told her ?
in this test was a table asking about heat transfer in a vacuum flask some parts of the table were filled in as an example but the question was would heat be lost through
A convection
B conduction
C radiaton
for different parts of the flask
acording to the examples in the table heat would be lost via the vacuum by convection and conduction
i told my sister that this was BS as a perfect vacuum canot conduct or convex heat at all i know a thermos flask is not a perfect vacuum but the diagram of a flask was labled only vacuum was i wrong to tell my sister this or was the example answers bs as i had told her ?