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Kelvin to Celsius (K to °C)Why can you not go below -273.15°C?
The temperature of -273.15°C, also known as absolute zero, is the lowest possible temperature that can be achieved in the universe. It is the point at which all molecular motion ceases, and no further decrease in temperature is theoretically possible. At this temperature, the kinetic energy of particles reaches its minimum, and they come to a complete standstill.
The concept of absolute zero is based on the Kelvin scale, which is an absolute temperature scale. Unlike the Celsius or Fahrenheit scales, the Kelvin scale starts from absolute zero as its zero point. In the Kelvin scale, absolute zero is defined as 0 Kelvin (0K). This scale is used in scientific and engineering applications where precise temperature measurements are required.
Going below -273.15°C or 0K is not possible because it violates the laws of thermodynamics. As temperature decreases, the energy of particles decreases, and they lose their ability to move. At absolute zero, the particles have no energy left to give up, and any further decrease in temperature would require them to possess negative energy, which is not physically possible. Therefore, -273.15°C or 0K represents the lower limit of temperature in our universe.