Apparatus for Soldering and Melting

A melting-point-of gallium apparatus for thermometer calibration.

We have investigated the equilibrium melting point of gallium as a temperature fixed-point at which to calibrate small thermistor thermometers, such as those used to measure temperature in enzyme reaction analysis and other temperature-dependent biological assays. We have determined that the melting temperature of "6N" (99.999% pure) gallium is 29.770 +/- 0.002 degrees C, and that the constant-...

0 Canonical Transformations and Soldering

We show that the recently developed soldering formalism in the Lagrangian approach and canonical transformations in the Hamiltonian approach are complementary. The examples of gauged chiral bosons in two dimensions and self-dual models in three dimensions are discussed in details.

Reflow Soldering Guidelines for Surface - Mount Devices

The indirect index for soldering bridges.

Introduction Parts of a bridge are related either clinically by the dentist, the direct index, or by the technician in the laboratory, the indirect index, to assemble the parts and invest them for soldering. T o form a direct occlusal index the dentist seats the bridge parts on the teeth and usually either makes a plaster impression record' or uses a self-curing acrylic resin record from which ...

Ersa wave soldering systems