Activity for Chromatix‭

Type	On...	Excerpt	Status	Date
Answer	—	A: What is the purpose of being close-hauled when sailing upwind? I'd like to illustrate this question with some detail on particular types of ship or boat. The classic image of the Age of Sail is a tall ship with three masts, each festooned with square sails hanging from yard-arms. This "full ship rig" was used on vessels as small as HMS Bounty, up to comparat... (more)	—	over 6 years ago
Answer	—	A: Is it possible to acclimatize to a cold weather in a short time? About 12 years ago, I moved from Britain to Finland, just in time for one of the coldest Februaries on record for Helsinki. Most days were -20°C, with some at -25°C, once the moderating influence of the nearby Baltic Sea was removed by it freezing over (which it does most years). Finnish ... (more)	—	over 6 years ago
Answer	—	A: What hazardous wildlife is there in the UK? Other answers have covered the local fauna pretty well, but what about flora? The only common venomous plant in the UK is the common stinging nettle, easily recognisable by its triangular, serrated leaves. This has fine hairs on its stem which, when brushed, pierce the skin and inject a mild venom.... (more)	—	over 6 years ago
Answer	—	A: Storing hunting firearms and ammo in a safe not designed for them? Most firearms regulations (and certainly best practices) require the firearm itself and its ammunition to be protected by separate, independent locks. Gun safes typically help you meet this requirement with a locked compartment for the ammunition within the main safe. Modern ammunition is pretty st... (more)	—	over 6 years ago
Answer	—	A: How can I report an emergency via SMS text message? Although the question specified using no equipment beyond a standard mobile phone, I think it's worth pointing out that VHF and UHF radio signals can typically be heard over greater distances than a phone signal, and shortwave signals even further. If you are planning to travel into remote areas wit... (more)	—	over 6 years ago
Answer	—	A: How can I report an emergency via SMS text message? In the EU (including the UK), SMS to the general emergency number (112) appears to be widely supported technically, but several countries I checked appear to require pre-registration. It's not clear whether that means SMS from unregistered numbers would be rejected. In the UK, the British Transport... (more)	—	over 6 years ago
Answer	—	A: What format should I use to report my location to emergency responders? If you're in Britain, you can either provide GPS coordinates in latitude and longitude as normal, or an Ordnance Survey grid reference which is easily obtained from the maps normally used in Britain. The OS grid is essentially a transverse-Mercator projection, but is not the same as UTM. Probably m... (more)	—	over 6 years ago
Answer	—	A: How can I get a GPS location for this tree on a distant hillside? Another answer describes a good method for triangulating a position from two or more viewpoints. This is a method you could use if you have only one viewpoint, but also have access to a topographic map. In this case, the tree is clearly visible because it projects from the limb of a hill. This is ... (more)	—	over 6 years ago