Why Your Clothes Dry at Sub-Zero During an Expedition
It seems logical that nothing would dry in -10°C weather, yet Everest trekking enthusiasts often find their laundry dry in hours. The unique physics near the Mount Everest summit allows for rapid evaporation despite the cold.
The air at Everest Base Camp is incredibly dry. This low vapor pressure creates a 'vacuum' effect that sucks moisture out of wet fabrics. It’s a scientific advantage for Mount Everest expedition members who need to stay dry to stay warm.
Even if the air is freezing, the direct sun at high altitude is powerful. The UV rays provide enough energy to trigger evaporation on the Mount Everest summit approach, helping trekkers maintain their hygiene and comfort.
The constant Himalayan wind acts as a mechanical force, stripping away the moist air layer around wet gear. This is why wind-exposed ridges on the Everest trekking route are the best places to air out your kit during a Mount Everest expedition.
Use the physics of the mountain to your advantage. Keep your gear dry to ensure your body can focus its energy on reaching the Mount Everest summit.
