All the twenty-one newly observed frequency shifts are represented by relatively feeble lines and evidently belong to the Raman spectrum of the second order, namely, octaves and combinations of ...

Modern petrol engines can use petrol containing up to ten per cent ethanol without needing any modifications, and most petrol sold in the UK contains ethanol. Although biofuels are in theory ...

The success of Menzies and Skinner 1 in observing some detail in the Raman spectrum of the substance, however, encouraged us to undertake an investigation having for its object a fuller ...