To get the 45-degree angle, position the mirrors so that their front edges align with those of the top and bottom openings; when viewed head-on, the mirrors should fill the 3-inch openings. Once I blocked a few users who kept leaving inappropriate comments, my broadcasts have become a lot more civilized. How can we get the light around the corner using mirrors? The light then bounces to an identically angled mirror at the bottom, providing the image we see when we look into a periscope. It is one of the most popular independent small business publications on the web. The stadimeter is a rangefinding device, which allows the captain to plot his attack with much greater accuracy than simply trying to guess how far away the target is located. Check out Really incredible, helped me get more content for blogs.
In order to fit everything into the graphic the distances and sizes of the vessels are not to scale. Periscope assembly illustration Observations, Data, and Conclusions 1. Touching the little person takes you to another screen. Then just as I was writing this I realised I have my iPhone sound off — little flick switch on side — clicked that to on and hey presto… Hope that solves it for the couple of people you have in this stream. One common term is periscope depth which is defined as the depth needed to extend the scope above the surface of the water. To fasten the cartons together more securely, try taping the inside of the box together on one side, then taping all four outside surfaces. If anything, Periscope will make YouTube more important.
The black plate, with the eyepiece in its upper half, is the rayfilter assembly. This prevents a potential ingress point for small arms fire, with only a small difference in vision height, but still requires the armour to be cut. Connect with others on their broadcasts. Just toggle on the chat icon at the bottom of the replay screen before hitting that replay button. The mechanical systems of submarine periscopes typically use and need to be quite sturdy to withstand the drag through water. If you want to keep your location private, turn this off. Starting at the bottom right corner, cut on that line.
The upper prism could be tilted from the conning tower, to allow the field of view to be elevated for air search, or depressed to look close in. You can see this in the picture on the right. Periscope is an app that truly takes advantage of its mobile platform incorporating notifications and location as well as social sharing on Twitter of course , live discussions and feedback. As a part of Polish—British pre- military cooperation, the patent was sold to Vickers-Armstrong where it saw further development for use in tanks, including the , , , and models as the. That, plus some glitches on Periscope. Do you think the periscope would work if the mirrors were at some angle other than 45 degrees? A couple of friends have the same, but not everyone. Aircraft carriers used planes and bombs in essentially the same manner that battleships and cruisers used their guns, though obviously with considerably greater range and power.
The same principle is used by surveyors, though they have the obvious advantage of basing their ranges on a graduated pole of known length held by an assistant. Imagine if you followed a few thousand people, that would be too many suggestions. I wish Periscope was fine-tuned, LuTina — alas, we can only block people when we come in contact with them, not beforehand. During 1939-1945 , artillery observers and officers used specifically-manufactured periscope binoculars with different mountings. You can keep tapping the screen to give them more and more hearts and the more you give, the higher they flutter on the screen.
Set up your Periscope account. In order for a submerged navy submarine to sink an enemy ship, some means of aiming the torpedoes was required. In any case, if screw pitch is known, and an accurate count obtained, this can give a fairly good speed estimate. Fortunately, I figured out how to delete that account, but lesson learned! A periscope is built like and works much like a telescope, with a long tube containing a mirror at each end. The gyroscopic guidance allows the torpedo to be set to travel a particular course, rather than having to point the submarine at where the captain wants the torpedo to go, which had been necessary with early torpedo designs, which could only travel in a straight line. This design, patented by in 1936, first saw use in the light tank produced from 1935 to 1939.
In the periscope, light hits the top mirror at 45° and reflects away at the same angle. Once they're permanently stuck in the right position, you can use your periscope to spy on people, or see over the top of a crowd. Use packing tape or another strong tape to tape the open ends of the cartons together, making one long box. Trace the second mirror and cut as you did before. Submarines are normally more vulnerable to damage than surface warships. Be very careful of using this site for very important videos you may want to share and if save.
Dear Anna, i have the same problem, no on can see my comments. You may also use two sections of slightly different sizes, so one fits snugly into the other. The right handle adjusts the optical power of the periscope, which is also, optically, a telescope. You can also use it to see around corners. Something to keep in mind before sharing your broadcast on Twitter: is it good enough to add value to your Twitter followers or will it be just more noise in their Twitter stream? Once you start a live broadcast, Periscope will instantly notify your followers so they can join, comment, and send you hearts in real time. It was believed that advances in detection and anti-submarine warfare weapons had made it suicidal to expose a periscope in daylight. Send broadcast to Twitter Do you want to share your broadcast on Twitter? Great questions, Paul; here are some answers — to the best of my knowledge.
Submarines generally attacked while submerged. To see the list, touch the arrow to the right. The two periscopes differ in the way they erect the image. What do you observe about the two angles? All you need to do is click on the link when someone shares it. For that, just tap on their name wherever you see it and uncheck the follow box.
The copies were based on Lend-Lease British vehicles, and many parts remain interchangeable. Removed, now we gave lost it forever. Is there any other way I can log back into my account? According to the recognition book, this is 100 feet. The early designs of the submarine periscope that were used in World War 2 were very simple by essentially having two telescopes pointing towards each other. Or, if there are escort vessels with the target, it may be more prudent to attempt to slip away and listen for any hits on the hydrophones. Might be a technical issue beyond my knowledge. Approach Procedure Once a submarine finds a target, the approach and attack is essentially an exercise in geometry.