Sentence examples for composition of coins from inspiring English sources
Governments also set the weight and metallic composition of coins.
Discovering relationship between elemental composition of coins and their origin has begun in the past 10-15 years with energy dispersive X-ray fluorescence spectroscopy devices (XRF).
It can be summarized that chemical composition of coins was determined by three different methods—handheld X-ray fluorescence (S1-Titan, 5 mm analysis spot), micro X-ray fluorescence (ARTAX 200, qualitative and quantitative data, chemical compositions maps) and by energy dispersive spectroscopy in SEM, respectively.
An analogous dendrogram appears in Figure 9 for the elemental composition of coin bulk (B), patina (P) and soil near to coin(N); four triplets are evidenced by colours, three of which refer to the same coins already identified by the previous dendrogram.
(XLS 34 KB) 40494_2012_2_MOESM2_ESM.xls Additional file 2: Table S2: Exploratory statistics for elemental composition of mediaeval coins.
However, determining the chemical composition of the coins and evaluating the data with chemometric methods can provide scientifically valid results to aid the archaeologists' and numismatists' work in classifying the coins according to their times of origin.
Atomic composition was determined at six rectangular areas for both coin A and coin B. Because of high spatial resolution, differences in results can be attributed not only to measurement error, but also to true local variations of composition of the coins.
The original composition of the coins was sterling (0.925) silver.
The precious metal composition of US coins was calculated such that gold would be fifteen times as valuable per ounce as silver.
PGAA has previously been used on other archaeological and heritage objects; for example, to analyse bulk composition of silver coins (Kasztovszky et al. 2005), other metals (Kasztovszky et al. 2000) and stone artefacts (Kasztovszky et al. 2008).
"The current security elements built into machines are designed to measure the metal composition of the coin," she says.
