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Flask is a micro web framework written in Python. It is classified as a microframework because it does not require particular tools or libraries. [ 2 ] It has no database abstraction layer, form validation, or any other components where pre-existing third-party libraries provide common functions.
The books are an example of a media franchise, consistently sporting a distinctive cover—usually yellow and black with a triangular-headed cartoon figure known as the "Dummies Man", and an informal, blackboard-style logo. Prose is simple and direct; bold icons, such as a piece of string tied around an index finger, are placed in the margin to ...
The inner flask contains liquid helium and the outer flask contains liquid nitrogen, with one vacuum section in between. The loss of precious helium is limited in this way. Other improvements to the vacuum flask include the vapour-cooled radiation shield and the vapour-cooled neck, [11] both of which help to reduce evaporation from the flask.
The 2025 New Year’s Eve numerals are seen on display in Times Square on December 18, 2024 in New York City. (Michael M. Santiago/Getty Images)
A shaker is a piece of laboratory equipment used to mix, blend, or agitate substances in a tube or flask by shaking them. It is mainly used in the fields of chemistry and biology. A shaker contains an oscillating board that is used to place the flasks, beakers, or test tubes.
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3. Keebler Fudge Magic Middles. Neither the chocolate fudge cream inside a shortbread cookie nor versions with peanut butter or chocolate chip crusts survived.
A cryogenic storage dewar (or simply dewar) is a specialised type of vacuum flask used for storing cryogens (such as liquid nitrogen or liquid helium), whose boiling points are much lower than room temperature. It is named after inventor James Dewar, who developed it for his own work. They are commonly used in low-temperature physics and chemistry.