Wednesday’s ad is for Pilsner Urquell, from what looks to be the 1950s based on the style of illustration on this postcard. Showing a geeky-looking mathematician in front of a blackboard filled with a calculation. I wonder if it’s just gibberish or if it really does express something mathematically — gravity perhaps? But the idea is that if it weren’t for math we wouldn’t be here on planet beer to enjoy our Pilsner Urquell.
Loox like gibberish to me, but it may be something esoteric related to physics, as I see the word “erg” (unit of work, which is equivalent to a fraction of a joule or some number of joules).