Question
In a vacuum flask, the walls enclosing the vacuum are silvered on the inside. State the reason for this.
Answer
Silver is an excellent reflector of radiant heat, including infrared radiation.
The silvered interior surface reflects back a significant portion of the radiant heat, preventing it from escaping. This helps to maintain the temperature of the contents inside the flask for a longer period.
The silvered interior surface reflects back a significant portion of the radiant heat, preventing it from escaping. This helps to maintain the temperature of the contents inside the flask for a longer period.
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