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What is thermometry?

Thermometry The branch of heat relating to the measurement of the temperature of a body is called thermometry. The thermometer is an instrument used to measure the temperature of a body. The essential requisites of a thermometer are given as under:  1) Construction, 2) Calibration, and 3) Sensitiveness. For the construction of a thermometer, the proper choice of a substance, whose physical property varies uniformly with rising in temperature, is essential. 1) Construction The physical property of a substance plays an important role in the construction of a thermometer. In a mercury thermometer, the principle of expansion of mercury with rising temperature is used. The platinum resistance thermometer is based on the principle of the change in resistance with a change in temperature. The gas thermometer is based on the principle of change in volume or pressure with a change in temperature. 2) Calibration  When a thermometer is constructed, it should be properly calibrated. The standa

What is a blue alert?

What is a blue alert?

Blue Alerts are designed to speed in the apprehension of violent criminals who kill or seriously wound local, state, or federal law enforcement officers. During a Blue Alert, the public receives information regarding the suspected assailant, facilitating tips and leads to law enforcement.

On August 18th, 2008, Government Rick Perry signed Executive Order RP-68, creating the state's Blue Alert program. 

Blue Alert is the second stage of alert (as for a threatened air attack or an approaching storm) during which emergency preparations are carried out according to plan.

The below represents Blue Alert criteria for the state's network:

  • A law enforcement officer must have been killed or seriously injured by an offender.

  • The investigating law enforcement agency must determine that the offender poses a serious risk or threat to the public and other law of enforcement personnel.

  • A detailed description of the offender's vehicle, vehicle tag, or partial tag must be available for broadcast to the public. 

  • The investigating law enforcement agency of jurisdiction must recommend the activation of the Blue Alert to the Texas Department of Public Safety (DPS).

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