
now it’s time to look at an everyday object using an infrared camera hot
object using an infrared camera hot
object using an infrared camera hot things give off lots of infrared while
things give off lots of infrared while
things give off lots of infrared while cold things give off less and this
cold things give off less and this
cold things give off less and this camera can actually do what our eyes
camera can actually do what our eyes
camera can actually do what our eyes can’t it can see the variations in
can’t it can see the variations in
can’t it can see the variations in temperature there are about 30 million
temperature there are about 30 million
temperature there are about 30 million fridges in the UK alone what will the
fridges in the UK alone what will the
fridges in the UK alone what will the infrared camera reveal about this one
infrared camera reveal about this one
infrared camera reveal about this one you ready rich Oh ready so what you see
you ready rich Oh ready so what you see
you ready rich Oh ready so what you see black and very dark blue most of the
black and very dark blue most of the
black and very dark blue most of the fridge is at plus four degrees Celsius
fridge is at plus four degrees Celsius
fridge is at plus four degrees Celsius but because heat rises the top section
but because heat rises the top section
but because heat rises the top section is at double that you have a look at the
is at double that you have a look at the
is at double that you have a look at the freezers if there’s any difference you
freezers if there’s any difference you
freezers if there’s any difference you can’t see any definition in there at all
can’t see any definition in there at all
can’t see any definition in there at all it’s very cold well that’s a shock
it’s very cold well that’s a shock
it’s very cold well that’s a shock revelation the freezer is cold
inside it’s around minus 18 degrees
inside it’s around minus 18 degrees Celsius so it’s no wonder that after
Celsius so it’s no wonder that after
Celsius so it’s no wonder that after just seconds John his fingers have half
just seconds John his fingers have half
just seconds John his fingers have half in temperature another few minutes and
in temperature another few minutes and
in temperature another few minutes and he’d officially have frostbite until
he’d officially have frostbite until
he’d officially have frostbite until 1929 fridges used toxic gases including
1929 fridges used toxic gases including
1929 fridges used toxic gases including ammonia and sulfur dioxide as coolant
ammonia and sulfur dioxide as coolant
ammonia and sulfur dioxide as coolant unfortunately several fatal accidents
unfortunately several fatal accidents
unfortunately several fatal accidents occurred today fridges use refrigerant a
occurred today fridges use refrigerant a
occurred today fridges use refrigerant a man-made chemical which absorbs heat
man-made chemical which absorbs heat
man-made chemical which absorbs heat it’s circulated by this compressor which
it’s circulated by this compressor which
it’s circulated by this compressor which is the hottest part of the fridge the
is the hottest part of the fridge the
is the hottest part of the fridge the refrigerant travels in the walls of the
refrigerant travels in the walls of the
refrigerant travels in the walls of the compartment absorbing heat from the food
compartment absorbing heat from the food
compartment absorbing heat from the food when it comes out of the back of the
when it comes out of the back of the
when it comes out of the back of the fridge the liquid coolant is warm as it
fridge the liquid coolant is warm as it
fridge the liquid coolant is warm as it travels down through these tubes it
travels down through these tubes it
travels down through these tubes it cools down the change from red to green
cools down the change from red to green
cools down the change from red to green represents a massive temperature drop by
represents a massive temperature drop by
represents a massive temperature drop by the time it gets the bottom it’s cool
the time it gets the bottom it’s cool
the time it gets the bottom it’s cool enough to pass inside the fridge again
enough to pass inside the fridge again
enough to pass inside the fridge again you
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