![]() ![]() The ratio of the speed of an object to the speed of sound (in the same medium) is called the object's Mach number. In fluid dynamics, the speed of sound in a fluid medium (gas or liquid) is used as a relative measure for the speed of an object moving through the medium. The speed of shear waves is determined only by the solid material's shear modulus and density. The speed of compression waves in solids is determined by the medium's compressibility, shear modulus and density. Shear waves in solids usually travel at different speeds than compression waves, as exhibited in seismology. ![]() Sound waves in solids are composed of compression waves (just as in gases and liquids), and a different type of sound wave called a shear wave, which occurs only in solids. In an exceptionally stiff material such as diamond, sound travels at 12,000 metres per second (39,000 ft/s), - about 35 times its speed in air and about the fastest it can travel under normal conditions. For example, while sound travels at 343 m/s in air, it travels at 1,481 m/s in water (almost 4.3 times as fast) and at 5,120 m/s in iron (almost 15 times as fast). However, the speed of sound varies from substance to substance: typically, sound travels most slowly in gases, faster in liquids, and fastest in solids. In colloquial speech, speed of sound refers to the speed of sound waves in air. The speed has a weak dependence on frequency and pressure in ordinary air, deviating slightly from ideal behavior. The speed of sound in an ideal gas depends only on its temperature and composition. It depends strongly on temperature as well as the medium through which a sound wave is propagating. At 20 ☌ (68 ☏), the speed of sound in air is about 343 metres per second (1,125 ft/s 1,235 km/h 767 mph 667 kn), or one kilometre in 2.91 s or one mile in 4.69 s. When moving horizontally along a Rope, the Stopwatch will display " 0 mph" regardless of how fast the player is moving.The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium.When midair (jumping, flying, etc.), the displayed value is the total velocity in any direction. When riding in a Minecart or running, the Stopwatch's display only represents horizontal speed.1 pixel per tick is equal to 1/16 tiles (16 pixels in a tile) per 1/60 seconds (60 ticks in a second ), hence the conversion factor between miles per hour and tiles per second is (42240/16)/(216000/60) = 2640/3600 = 11/15. Flipping the fraction gets the conversion factor between miles per hour and pixels per tick: 42240/216000. The denominator represents 1 mile in pixels: 16 pixels in a tile multiplied by 1/2 tile in a foot multiplied by 5280 feet in a mile = 42240 pixels. The numerator of this fraction represents 1 hour in ticks: 60 ticks in a second multiplied by 3600 seconds in an hour = 216000 ticks. This is taken from Terraria's source code, where the player's internal pixels-per-tick velocity is multiplied by 216000/42240 ( hard-coded) to get the miles-per-hour velocity for display.For example, the Minecart's top speed is 66 mph, which is equal to 48.4 tiles/second. The conversion factor between miles/hour and tiles/second in Terraria is 11/15 (0.7333.), and conversely, 15/11 (1.363636.) between tiles/second and miles/hour.Keep in mind modifiers will no longer apply to the player when not equipped. Additionally, the info it provides will be shared with nearby players of the same team in multiplayer. ![]() The Stopwatch may be carried in the player's inventory without loss of functionality, unless equipped to a social slot.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |