Not my area of expertise but density is the wrong concept to be looking into remaining equal, its pressure. The amount of helium gas you pump in to the balloon creates a certain outward pressure that’s at equilibrium with outside air pressure, that’s why it doesn’t collapse (if you were to place the balloon in a vacuum then it would expand and probably burst, that’s usually what happens when a child loses one and it escapes higher up in the atmosphere to lower pressures)

The atmospheric pressure simply isn’t strong enough to overcome the outward pressure.

Bonus point: density is actually the reason why a helium balloon floats, its less dense than air so it wants to float up. Much like a rubber duck or ice cube in water.

Æðislegt! Gaman að heyra!

Yeah the friend thing is always tricky but if you’re open (as you clearly are) there’s always a community to be found with some tenacity!

Glad to have you 🤘

Bombandi, já maður! Velkomin/n!

Má ég spyrja: Hvers vegna Ísland? Hvernig gengur að læra tungumálið? Hvernig gengur að finna vinnu? Nærðu að vingast við fólk?

(Feel free to respond in English, it’s a bitch of a language to learn)

If you can game then Rocket League in slow-mo is an absolute banger

Glass Animals, hands down best concert I’ve been to! My GF wasn’t thrilled about going but by the end she was dancing like crazy. They’re much more impactful and energetic live than their recorded stuff would make you think!