Web6 jul. 2024 · This question is answered by the Guinness World Records. The normal intelligible outdoor range of the male human voice in still air is 180 m (590 ft 6.6 in). The silbo, the whistled language of the Spanish-speaking inhabitants of the Canary Island of La Gomera, is intelligible under ideal conditions at 8 km (5 miles).
How far Can You See With Binoculars (Best Steps and Tips)
Web27 apr. 2012 · On the top of Mt Everest, you could theoretically see for 339 kilometres (211 miles), but in practice cloud gets in the way. For a truly unobstructed view though, look up. On a clear night, you can see the … Web6 jun. 2024 · There are a lot of factors that determine exactly how far a telescope can see, but as a rule of thumb this is what you can expect from the most common sizes of telescope under ideal... dsソフト
How Far Can The Human Eye See Clearly » Theblogy.com
Web3 mrt. 2024 · On the top of Mt Everest, you could theoretically see for 339 kilometres (211 miles), but in practice clouds get in the way. For a truly unobstructed view, though, look up. How far can a cat see? A cat’s visual acuity is anywhere from 20/100 to 20/200, which means a cat has to be at 6 metres to see what an average human can see at 20 or 30 ... Web1 jul. 2024 · Having 20/20 vision means you can clearly see an object 20 feet away that you should be able to see at that distance. People with better visual acuity can see objects at … Web8 jun. 2024 · This means that you can clearly see at 20 feet what healthy eyes can see at that distance. If you have 20/50 vision, for instance, it means that you must be 20 feet away from an object... ds ソフト