The user agent is configured to perform a random access procedure and to perform radio measurements.

This enables more accurate measurements to be made.

This method does not require magnetic or gyroscopic measurements to be taken.

Methods and systems for taking measurements related to subterranean formations.

Instructions to perform further measurementscan be received via a PC.

Another aspect of the present invention is a system for spectroscopic measurements, comprising reagents for an assay and a multi-well platform for fluorescence measurements.

Both in vivo and in vitro measurements can be made.

The device is used to make differential absorption measurements.

The advantage is the possibility of minimizing errors in measurement.

Such devices can be programmed in real time for adaptive measurements.

Color coordinates calculated with this method allow repeatable measurements in rough materials.

Apparatuses and methods for indicating and performing interference measurements.

A quick and accurate measurement is achieved by use of the movable measuring apparatus of the invention.

The invention also relates to an apparatus used to perform tissue pH measurements.

Methods and apparatus for performing biometric determinations using optical spectroscopy of tissue (40).