![]() The image was created with a marketing plan in mind. The picture of the top part of the iceberg was taken in Antarctica and the bottom part in Alaska. The most well-known image associated with the "tip of the iceberg" metaphor was taken by professional photographer Ralph Clevenger, who composed the image using 4 separate photographs: the shot of the clouds and underwater water was taken in Santa Barbara. Symmetry tilted away from vertical at strange angles.īelow are some Stable orientation of cylinder of density 1/2 as function of H/R by E. ![]() It's fascinating how homogeneous bodies with a symmetry like a cylinder can float in surprising ways: with the axis of To this day, no one has been able to proved or disprove the question. () once asked if spheres are the only homogeneous bodies that can float in every orientation. Icebergs also "topple" and one of the causes for this is the constant change in shape due to non-uniform melting. Megan's tweet inspired the creation of a () to see how an iceberg of arbitrary shape would float. In February 2021 glaciologist Megan Thompson-Munson actually () a plea for scientists to draw icebergs accurately. Conversely, if the metacentre, M, is located below the centre of gravity, G, the body is regarded as unstable. Thus, it can be concluded that if the metacentre, M, is situated above the centre of gravity, G, the body is considered stable. However, the right-hand diagram in the figure demonstrates that W and FB also generate an overturning moment that causes the body to tilt further in the same direction. The central diagram in the figure shows that the weight, W, and FB create a restoring moment that brings the body back to its untilted position. The point at which a vertical line from B' intersects the body's line of symmetry is called the metacentre, M. When the body tilts, its centre of buoyancy shifts to a new location, B', due to the change in the shape of the displaced volume. On the other hand, the center of buoyancy, B, represents the centroid of the volume of fluid displaced by the object, and the buoyancy force, FB, acts on this point. In its untilted position, the center of gravity, G, is the point where the weight of the object, W, is exerted. The given diagram illustrates a floating object that is tilted at an angle Δθ. A floating body is **unstable** if, when it is displaced, it moves to a new equilibrium. At Idenna we are a passionate bunch of storytellers who understand the value in a well thought out project and would love to connect you to your audience.- A floating body is **stable** if, when it is displaced, it returns to equilibrium. These principals also apply to graphic design work, social media campaigns, photography projects, web design and that perfect PR piece. What would happen if an iceberg didn’t have its huge, hidden, steadying base? It would, most likely, capsize. The bulk of the work goes on behind the scenes or under the surface. So in many ways the parts of the production process that is seen by most (the days spent filming and the final product) are really only the tip of the iceberg. And even when you miss something you have the capacity and clarity of mind to see an obvious solution to the problem. When you get it right, it feels like you’ve cheated, as the rest of the project seems to slot into place so beautifully and everything runs like a Swiss watch. It’s figuring out the what the problems will be before they occur and deciding exactly what it is you are trying to achieve before you head out and leave that vital piece of kit you need in the cupboard. ![]() ![]() The idea of pre-production is to make the following parts of the process go as smoothly as possible. Pre-production would rather be in the office storyboarding, casting and filling out risk assessments than be out in the field filming from a helicopter or the waves of Watergate Bay, or getting all the credit for the final colour corrected and visually stunning piece.īut the fact of the mater is without pre-production’s hard work, the helicopter would have been a Robin Reliant, the waves of Watergate would have wiped out a member of the crew and post-production would have no footage to work with. Pre-production is the unsung hero of film production, it’s the slightly geeky older brother of the cheeky twins ‘production’ and ‘post production’. Whilst our technical ability has no doubt improved along the way, the area which has seen the most marked improvement is pre-production. It’s incredibly satisfying to see the whole Idenna film crew push forward and create evermore impressive productions with each new completed project. I am still learning on a daily basis and relishing the challenge of producing visually captivating imagery with an intriguing story at its heart. I have now been producing film professionally in Cornwall for over three and half years.
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