LOMO Polam P-113 Polarising Microscope

Posts relating to the use of the LOMO Polam P-113 Polarising Microscope. This is an old Russian Federation Microscope – solidly made with rotating stage, crossed and plain polarising filters, and (in Andy’s model May 2018) an LED-modification to the built-in illuminator.

LOMO Polam Fossiliferous Steinheim Impact Crater Lake Bed Miocene crossed-polarisation using LOMO Polam microscope

LOMO Polam Fossiliferous Steinheim Impact Crater Lake Bed Miocene crossed-polarisation using LOMO Polam P-113 microscope.

Andy

x11 objective:

x20 objective (panorama of 15 frames) – two fossils present with birefringence in crystals in the matrix in which they are embedded:

Plain vs Crossed Polarisation various samples LOMO Polam P-113 Microscope

Comparing plain vs crossed polarisation for various samples – all x3.5 magnification as currently this is only objective I have for this microscope – uses special clamp mechanism so my other objectives won’t fit.

For more information on the LOMO Polam P-113 Polarising Microscope, see a wide range of posts at: http://roslistonastronomy.uk/category/microscopy/equipment-for-microscopy/lomo-polam-p-113-microscope

Andy

Permian-floodplain-deposit-Robledo-New-Mexico-LOMO-Polam-P113-Crossed-Polars-120518: Excellent birefringement is shown here, and this can be seen varying between the images as polarised filter rotated (below).

Laminated-mudstone-LOMO-Polam-x3-5-plane-polar-120518: Some birefringence evident where crystals form in both images, more so in bottom as the two polarised filters approach 90 degrees orientation to each other (below).

Fossilised-palm-tree-LOMO-Polam-x3-5-plain-polar-120518: Even here some crystal deposition is evident, as shown by coloured areas of birefringence, more evident in second image where polars are crossed (below).