Termokaamerat

Termokaamerat, also known as thermos flasks or vacuum flasks, are insulated containers designed to keep liquids hot or cold for extended periods. They consist of a double-walled structure with a vacuum or gas-filled space between the walls, which minimizes heat transfer. The outer wall is typically made of metal, while the inner wall can be glass, plastic, or metal. The lid is usually fitted with a screw-on cap or a valve to prevent spillage and maintain the vacuum or gas seal.

Termokaamerat are commonly used for beverages, such as coffee, tea, and hot chocolate, as well as for food storage, like soups and stews. They are popular among outdoor enthusiasts, travelers, and office workers due to their ability to maintain temperature for several hours. Some models are designed for specific purposes, such as keeping drinks hot or cold, or for use in extreme temperatures.

The concept of the thermos flask was first patented in 1842 by Sir James Prescott Joule, but it was not until the late 19th century that the modern thermos flask design was developed. Since then, termokaamerat have evolved to include various materials, shapes, and features, such as insulated sleeves and carrying handles, to enhance usability and convenience.