Bright Electroplating of Copper in the Acid Bath

Plating of various objects with mirror-like surfaces of chromium, nickel, and other metals has expanded considerably during the past decade, and now ranks as an important enterprise, particularly with respect to the automotive industry.

Electro-Deposition of Iron from a Chloride Bath

Iron was electro-deposited from a ferrous chloride bath. Studies were made of deposits formed when current density was varied, and fin­ally when both current density and temperature were changed. An attempt was made to lay the ground work for a long range study of the chloride bath, and to determine the most simple conditions possible for obtaining a smooth, even, and thick deposit.

Noble gas, CFC and other geochemical evidence for the age and origin of the Bath thermal waters, UK

The city of Bath is a World Heritage site and its thermal waters, the Roman Baths and new spa development rely on undisturbed flow of the springs (45 °C). The current investigations provide an improved understanding of the residence times and flow regime as basis for the source protection. Trace gas indicators including the noble gases (helium, neon, argon, krypton and xenon) and chlorofluorocarbons (CFCs), together with a more comprehensive examination of chemical and stable isotope tracers are used to characterise the sources of the thermal water and any modern components. It is shown conclusively by the use of 39Ar that the bulk of the thermal water has been in circulation within the Carboniferous Limestone for at least 1000 years. Other stable isotope and noble gas measurements confirm previous findings and strongly suggest recharge within the Holocene time period (i.e. the last 12 kyr). Measurements of dissolved 85Kr and chlorofluorocarbons constrain previous indications from tritium that a small proportion (<5%) of the thermal water originates from modern leakage into the spring pipe passing through Mesozoic valley fill underlying Bath. This introduces small amounts of O2 into the system, resulting in the Fe precipitation seen in the King’s Spring. Silica geothermometry indicates that the water is likely to have reached a maximum temperature of between 69–99 °C, indicating a most probable maximum circulation depth of ∼3 km, which is in line with recent geological models. The rise to the surface of the water is sufficiently indirect that a temperature loss of >20 °C is incurred. There is overwhelming evidence that the water has evolved within the Carboniferous Limestone formation, although the chemistry alone cannot pinpoint the geometry of the recharge area or circulation route. For a likely residence time of 1–12 kyr, volumetric calculations imply a large storage volume and circulation pathway if typical porosities of the limestone at depth are used, indicating that much of the Bath-Bristol basin must be involved in the water storage.

William Pultney, earl of bath [Material gráfico] : in the collection of Lord Northnick

Resumen: Descripción: retrato de 3/4 de William Pultney sentado y de perfil

The influence of the outer bath in the dynamics of axisymmetric liquid bridges

The main effects on the dynamics of a liquid bridge due to the presence of an outer liquid, as occur in experiments using the Plateau-tank technique, are considered. The one-dimensional nonlinear model developed here allows us to perform the computation of both breaking processes and oscillatory motions of slender liquid bridges, although in this paper only the results concerning breaking processes are reported. Additionally,the oscillatory motions are studied both experimentally and by using a new linear model. Results from both sources show good agreement

Complaint against the keeper of the bath, 1828 July 28

One draft of a letter.

Contributions for a bath in Charles' River, 1799 & 1800, 1800

Includes contribution totals from personal subscribers, individual donors, the Harvard Corporation, and the Humane Society for the construction of a bath on the Charles River. Also contains estimated costs for materials and labor.

As teorias da visão no Ocidente medieval até ao século XII: o comentário de Calcídio ao Timeu de Platão e a obra de Adelardo de Bath

A tradução do Timeu de Platão por Calcídio e respectivo Comentário, no século IV, encetou uma longa tradição no estudo da óptica durante a Idade Média, tradição esta que irá dominar até ao século XIII. O século XII, no entanto, irá ser marcado por um novo olhar neste campo, situação a que não é alheia a influência árabe que, pela mão de tradutores cristãos do ocidente, trouxe novas aportações científicas que vieram a contribuir para o desenvolvimento das correntes filosóficas sobre a matéria. Um desses tradutores foi Adelardo de Bath que, em pleno século XII, quer traduzindo obras árabes até aí desconhecidas do ocidente cristão, quer através da sua produção própria, lavrará o terreno adequado para o advento das sucessivas revoluções que a partir do século XIII surgiram neste campo.

An illustration of the Roman antiquities discovered at Bath /

Title vignette.

The Bath physicians of former times. A paper read before the Bath Literary and Philosophical Association, October 20th, 1882.

Mode of access: Internet.

Biographical sketches of Bath celebrities, ancient and modern : with some fragments of local history /

Includes index.