Underwater cameras are typically placed behind glass windows to protect them from the water. Spherical glass, a dome port, is well suited for high water pressures at great depth, allows large field of view, and avoids refraction if pinhole camera positioned exactly sphere's center. Adjusting real lens perfectly center challenging task, both in terms how actually guide centering process (e.g. vi...

Ethnomathematics is a mathematics learning approach with cultural media around students. Therefore we need the right in process to present that close student life so students have high motivation mathematics. This study aims determine of making mosque domes and ethnomathematics-based by modeling domes. uses qualitative research ethnographic methods. Respondents were dome makers, vault designers...

A dynamical theory of geophysical precipitation pattern formation is presented and applied to irreversible calcium carbonate (travertine) deposition. Specific systems studied here are the terraces and domes observed at geothermal hot springs, such as those at Yellowstone National Park, and speleothems, particularly stalactites and stalagmites. The theory couples the precipitation front dynamics...