solispicy.blogg.se - Subsmarine

The shape should be simple with clean lines, without too much detailing in the design.

The icon needs to be clear and easily recognizable, able to display on monitors of widely varying size and resolutions. Icons are meant to look like the item that they represent. The design itself involves a high level of skill in combining an attractive graphic design with the required usability features. Icon design factors have also been the topic for extensive usability studies. File icons generally display a document with an application logo that lets you know what application created it or is the default to open it. Folder icons help you identify what’s inside of them. Regardless of the operating system application icons are all generally unique, so they stand out from one another. Related 25 Illustration Based Business Card Designs The system icons currently in use have typically gone through widespread international acceptance and testing. This is true for both standard system icons and third party application icons to be included in the system. In order to maintain consistency in the look of a device, OS manufacturers offer detailed guidelines for the development and use of icons on their systems. of the U-boot hide his vessel in this stream, ready to the arms.ģ-ASDIC of hunter reveals there is an U-boot, but the echo turns back in less time than usual: consequently the hunter "believes" that the U-boot is closer and less deep cruising than the truth.( The false echo is the yellow stealth submarine).ĥ-Real U-boot reply and kills the hunter.Icon designs can be simple, with flat two-dimensional drawing or a black silhouette, or complex, presenting a combination of graphic design elements such as one or more linear and radial color gradients, projected shadows, contour shades, and three-dimensional perspective effects. The tactics are the following:ġ-the hunter doesn't know that there is a limited stream of dense waterĢ-the "seawolf" Cpt.

Watch the enclosed sketch: this is 1 of the most favourable condition for U-boots. Recently Alvin vessel and Ballard's crew discovered a "pond" of sweet (tap) water at the bottom of an abyss of Atlantic. is costantly +4C°.(.good as reply to Mait) There are no thermoclines there but only "saltclines": tunnels of water having different density only by mean of change in salinity. Not only: under 300 mt depth (beginning of "grey zone") the water temp. No allied submarine was able to reach those depths safely. Consequently the best vessels for floating UNDER thermoclines were the gemans. Note that sub-navigation OVER thermoclines could be extremely dangerous: it is like moving on a sonic mirror, like a black fly on a flat white surface. The limit of sonic shielding was in depth allowable, not in using submarine flushes and streams. On those charts were noted and draft thermoclines: famous the thermoclines facing Gibraltar. In Mediterranean war German U-Boot based in La Spezia used Italian charts and German charts were provided to the italian fleet in Atlantic.

Submarine war is pure science: there are only few chances for not-experienced crews or having only good will. for this reason U-boots used to hide themselves as close as possible to arctic pak) or submarine fluxes of warm or cold water. But during WW2 there was no technology to "spill" safety water in low depths Therefore brave captains (not only Germans, obviously ) signed on maps were there were submarine fluxes of sweet water close to rivers, lakes, volcanoes ect. Therefore 2 are the instruments suitable: a pressurized Thermometer called "bathithermograph" (A thermograph is a device made of a thermometer + pen-chirograph but "bathi-" a greek prefix meaning deep.) The other device is a DENSIMETER( a sample of water is mixed to oils having known density: if the layer of water is "between" 2 layers of oil having known density, the density of water will be intermediate.

the cold flush of a river in hot Mediterranean water could easily change the direction of sounds. of the U-Boot.) are sure that RELATIVE SALINITY is close to be the same in all depth or in all portion of Ocean you are crossing, there are good chance that different fluxes of deep water having different temperature could easily deflect sounds. % content of salt grams (SOLUTUM) per liter of Water (SOLVENT) before saturation. "Sonic diffraction by mean of thermoclines" : this is the thread.Īcoustic signals could be deflected during transition from a layer of water having a well known DENSITY to another layer having different known DENSITY.In open sea DENSITY is affected by TEMPERATURE and RELATIVE SALINITY.