Why is a Thermos flask good at keeping drinks cold as well as hot? (Please write a short answer) - Quora
![Vacuum flasks use a vacuum to keep out heat loss, if so there is near vacuum between the sun and earth, then how is the heat from the sun transmitted to earth? - Vacuum flasks use a vacuum to keep out heat loss, if so there is near vacuum between the sun and earth, then how is the heat from the sun transmitted to earth? -](https://qph.fs.quoracdn.net/main-qimg-071f1eaa39df6cccf49924e75dff33e8.webp)
Vacuum flasks use a vacuum to keep out heat loss, if so there is near vacuum between the sun and earth, then how is the heat from the sun transmitted to earth? -
![Explain the principle, structure, and working of a thermos flask with a well-labeled diagram. | Snapsolve Explain the principle, structure, and working of a thermos flask with a well-labeled diagram. | Snapsolve](https://wb-qb-sg-oss.bytededu.com/lms-office/20200612/1591966926582445910_b4ffa1eaa7a2c3a0d5c9b09661fee422_image1.png!content)