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A time temperature indicator ( TTI) is a device or smart label that shows the accumulated time-temperature history of a product. Time temperature indicators are commonly used on food, pharmaceutical, and medical products to indicate exposure to excessive temperature (and time at temperature). [1]
As a collection of classical material particles, the temperature is a measure of the mean energy of motion, called translational kinetic energy, of the particles, whether in solids, liquids, gases, or plasmas. The kinetic energy, a concept of classical mechanics, is half the mass of a particle times its speed squared.
Based on [1]. The glass–liquid transition, or glass transition, is the gradual and reversible transition in amorphous materials (or in amorphous regions within semicrystalline materials) from a hard and relatively brittle "glassy" state into a viscous or rubbery state as the temperature is increased. [2] An amorphous solid that exhibits a ...
Color temperature is conventionally expressed in kelvins, using the symbol K, a unit for absolute temperature. Color temperatures over 5000 K are called "cool colors" (bluish), while lower color temperatures (2700–3000 K) are called "warm colors" (yellowish). "Warm" in this context is with respect to a traditional categorization of colors ...
An extreme summer marked by deadly heat waves, explosive wildfires and record-warm ocean temperatures will go down as among the hottest in the last 2,000 years, new research has found. The summer ...
Here t is the time, G is the modulus, and T 0 < T 1 < T 2. Temperature dependence of elastic modulus of a viscoelastic material under periodic excitation. The frequency is ω, G' is the elastic modulus, and T 0 < T 1 < T 2. The time–temperature superposition principle is a concept in polymer physics and in the physics of glass-forming liquids.
The global average and combined land and ocean surface temperature show a warming of 1.09 °C (range: 0.95 to 1.20 °C) from 1850–1900 to 2011–2020, based on multiple independently produced datasets. [30] : 5 The trend is faster since 1970s than in any other 50-year period over at least the last 2000 years.
This is a list of television programs broadcast by the American television network The Weather Channel . There are four main types of programs on The Weather Channel: weather news programs, serial documentaries, Long-form shows, and specials such as the 100 Biggest Weather Moments, Top 100 Weather Moments, and Coast Guard: HMS Bounty .