Heat

Galinstan is a generic name for any member of the liquid metal family.

It includes the metals

1. Gallium,
2. Indium,
3. and Tin.

• It can be used to measure and monitor the temperature and hot spots of jet engine rotor blades.

• It can be used to measure and monitor the temperature and hot spots of jet engine rotor blades.

• It can be used to measure and monitor the temperature and hot spots of jet engine rotor blades.

• The instrument used to measure very high temperatures is an optical pyrometer.

  It measures temperature based on the thermal radiation (color or brightness) emitted by a hot object, making it suitable for extremely high temperatures where contact sensors cannot be used.

It captures monochromatic images of the Sun — meaning images in one specific color/wavelength, revealing fine details.

Used to study solar phenomena like:

• Sunspots
• Solar flares
• Chromosphere structures
• Prominences

• It is also called 'Desert Cooler'.
• The mechanism of this coolant differs from that of commonly used air conditioning equipment, which is based on the use of vapor-compression and adsorption refrigeration cycles.
• Air washers and wet- cooling towers are also based on this principle.

• This thermometer is based on Stephen's law.
• According to this, the amount of radiation emitted by an object at a high temperature is directly proportional to the fourth power of its absolute temperature.
• With its help, the temperature of distant objects (such as the Sun) is measured.

• Conduction — Heat transfer through the actual vibration and collision of molecules in a solid or stationary medium. The molecules themselves don’t move far but pass energy to neighboring molecules.
  Example: Heat passing through a metal rod.

• Convection — Heat transfer by the bulk movement of fluid (liquid or gas) molecules carrying energy from one place to another.
  Example: Warm air rising above a heater.

• Radiation — Heat transfer through electromagnetic waves without involving molecules or any medium. It can occur even in a vacuum.
  Example: Heat from the Sun reaching Earth.