Posts by Jasper
I'm pretty sure it's some kind of a suet cake/fat ball, i.e. bird's food, see the first image on the Wikipedia article: https://en.m.wikipedia.org/wiki/Suet_cake (Luc Viatour / https://Lucnix.be)
My favourite knot would be the taut-line hitch. While it is usually tied to form an adjustable loop, it can be used to connect two different ropes. It has the benefit that it can be tied rather eas...
When comparing dynamic ropes (single ropes) for climbing, which properties do really matter? I'm thinking about weight per meter and price, maybe diameter for very special belay devices. I'm goi...
The overall efficiency from a power bank to a smartphone battery is about 2/3, according to this source: https://www.powerbankguide.com/powerbank-capacity-explained/ The amount of energy a batte...
No. The butane will vaporize below the boiling point, just as water vaporizes below 100°C.
The advantage of the "one way"/piercable canisters is that they are way cheaper (up to four times with respect to price per mass of gas according to German Wikipedia). Also they are "good enough" f...
If you look for the manufacturer's promises for these "passive" boxes (there is absolutely no cooling, just the attempt to keep the cool in - called isolation), they usually state something around...
There's a dispute in my climbing group whether a "large" eye of the tie-in knot can be considered dangerous. While I don't see a problem with a loop that is about 10 cm across, others argue that th...
How much margin due to charging inefficiency should I add when calculating the size of batteries needed for a trip? You need approximately 50% more due to inefficiencies while charging from a powe...
I've been paddling three times (one week each) in rental (Canadian) canoes. My girlfriend and me brought all gear and food with us and there still was plenty of room for our dog in the boat. I kno...
The German mountaineer and safety expert Pit Schubert advocates to reduce the signals down to two: (I'm reusing @Ben Crowell's terms since I know only the German words) Leader to belay: "Alice, ...
