Geometry tells us that B@rt's 4x20mm tritium vials have 251 mm^2 of phosphor surface area and 251 mm^3 of volume. Merkava's 3x23mm vials have 217mm^2 of surface area and 163mm^3 of volume.
All things equal, B@rt's vials SHOULD be brighter, but are they really? By how much? I'm not counting the surface area of the ends, the dimensions don't account for the glass thickness, and the tritium pressure may be different, so the above numbers are just an approximation. If anyone has access to both of these vials, please do a side by side pic to show their relative brightness.
Thanks!
All things equal, B@rt's vials SHOULD be brighter, but are they really? By how much? I'm not counting the surface area of the ends, the dimensions don't account for the glass thickness, and the tritium pressure may be different, so the above numbers are just an approximation. If anyone has access to both of these vials, please do a side by side pic to show their relative brightness.
Thanks!