0.973 bar
Inches of mercury cannot be directly converted to millibars because they measure different things (pressure vs. length). You can convert inches of mercury to millibars using the conversion factor 1 inHg = 33.8639 mb, so 25.69 inHg is approximately 868.95 mb.
15w40 is thicker at all temps vs 10w30.
The .40 is a larger diameter round. The projectile has a dimension of .4005, versus the 9mm Parabellum, which has a dimension of .356. Of the two, the .40 is the more powerful cartridge.
The difference is the amount of lines of resolution. From a visual standpoint, they both look great, but if you have a TV less than 40" you won't be able to tell the difference at standard viewing distance.
.355 vs .40
36.2791% difference.
$40 $40
.30 vs. .355
yield vs ytd
no
both good
rap vs rock