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  2. Total dissolved solids - Wikipedia

    en.wikipedia.org/wiki/Total_dissolved_solids

    Total dissolved solids ( TDS) is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular ( colloidal sol) suspended form. TDS are often measured in parts per million (ppm). TDS in water can be measured using a digital meter.

  3. Freezing-point depression - Wikipedia

    en.wikipedia.org/wiki/Freezing-point_depression

    Freezing-point depression is a drop in the maximum temperature at which a substance freezes, caused when a smaller amount of another, non- volatile substance is added. Examples include adding salt into water (used in ice cream makers and for de-icing roads ), alcohol in water, ethylene or propylene glycol in water (used in antifreeze in cars ...

  4. Torpedo Data Computer - Wikipedia

    en.wikipedia.org/wiki/Torpedo_Data_Computer

    Torpedo Data Computer. U.S. Navy Mk III Torpedo Data Computer, the standard US Navy torpedo fire control computer during World War II. Later in World War II (1943), it was replaced by the TDC Mk IV, which was an improved and larger version. The Torpedo Data Computer ( TDC) was an early electromechanical analog computer used for torpedo fire ...

  5. Electrodialysis - Wikipedia

    en.wikipedia.org/wiki/Electrodialysis

    Electrodialysis ( ED) is used to transport salt ions from one solution through ion-exchange membranes to another solution under the influence of an applied electric potential difference. This is done in a configuration called an electrodialysis cell. The cell consists of a feed (dilute) compartment and a concentrate ( brine) compartment formed ...

  6. Kaveri River water dispute - Wikipedia

    en.wikipedia.org/wiki/Kaveri_River_water_dispute

    After hearing arguments of all the parties involved for the next 16 years, the tribunal delivered its final verdict on 5 February 2007. In its verdict, the tribunal allocated 419 TMC (11.9 km 3) of water annually to Tamil Nadu and 270 TMC (7.6 km 3) to Karnataka; 30 TMC (0.85 km 3) of Kaveri river water to Kerala and 7 TMC (0.2 km 3) to Puducherry.

  7. Training, validation, and test data sets - Wikipedia

    en.wikipedia.org/wiki/Training,_validation,_and...

    A training data set is a data set of examples used during the learning process and is used to fit the parameters (e.g., weights) of, for example, a classifier.. For classification tasks, a supervised learning algorithm looks at the training data set to determine, or learn, the optimal combinations of variables that will generate a good predictive model.

  8. Thermodynamic equations - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_equations

    The law was actually the last of the laws to be formulated. First law of thermodynamics. d U = δ Q − δ W {\displaystyle dU=\delta Q-\delta W} where. d U {\displaystyle dU} is the infinitesimal increase in internal energy of the system, δ Q {\displaystyle \delta Q} is the infinitesimal heat flow into the system, and.

  9. HAZMAT Class 9 Miscellaneous - Wikipedia

    en.wikipedia.org/wiki/HAZMAT_Class_9_Miscellaneous

    Any material that meets the definition in 49 CFR 171.8 for an elevated temperature material, a hazardous substance, a hazardous waste, or a marine pollutant. A new sub-class, class 9A, has been in effect since January 1, 2017. This is limited to the labeling of the transport of lithium batteries .