The application of different types of acoustic resonators such as pipes, cylinders, and
spheres in photoacoustics is considered. This includes a discussion of the fundamental …

Analogous to most new methods in science, photoacoustic spectroscopy (PAS) grew out of
an advance in technology, in this case the dramatic improvement in novel light sources …

We report a new value for the universal gas constant R: 8.314471±0.000014 J mol− 1 K− 1.
The standard error of R has been reduced by a factor of 5, to 1.7 ppm. R was determined …

New functional forms have been developed for multiparameter equations of state for non-
and weakly polar fluids and for polar fluids. The resulting functional forms, which were …

The interaction of sound waves with the medium through which they pass can be used to
investigate the thermophysical properties of that medium. With the advent of modern …

This work reviews the available data on thermodynamic properties of ethylene and presents
a new equation of state in the form of a fundamental equation explicit in the Helmholtz …

The speed of sound in methane has been measured with an estimated accuracy of better
than 0.002 per cent in the temperature range 275 K to 375 K at pressures up to 10 MPa …

We measured the acoustic resonance frequencies of an argon-filled spherical cavity and the
microwave resonance frequencies of the same cavity when evacuated. The microwave data …

We report on two sets of isothermal acoustic measurements made with argon close to the
triple point of water using a 50 mm radius, thin-walled, diamond-turned quasisphere. Our …

Nearly one hundred years after Bells discovery, resonant photoacoustic spectroscopy
awoke from a long sleep. The introduction of lasers as radiation sources has led to rapid …