Structures or Why Things Don't Fall down

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a line passing down the wall of a building from the top to the bottom which defines the position at which the vertical thrust can be considered as acting in each successive joint.” (p.181) Strength is not the same thing as stiffness (e.g. a biscuit is stiff but weak, steel is stiff ad strong, nylon is flexible (not stiff / low E) and strong, raspbery jelly is flexible (not stiff / low E) and weak

If a greeting structure breaks, people are likely to get killed and to engineer de well to investigate the behaver of structures with circumventing Lice.

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If I weigh 200 pounds and stand on the floor y then the soles of my feet push downwards on the floor with a push or thrust of 200 pounds; that is the business of feet .

What are structures? A structure is a collection of materials intended to sustain loads. Structures occur in nature as well as in the man-made world.

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Most of us probably know that the oldest buildings/structures in the world act primarily in compression (arches, walls) such as the Colosseum in Rome. But why is that? Well, J. E. Gordon clarifies that it was very difficult to build joints that make sure that the tension elements are not coming apart. (p.171) One of my biggest takeaways, personally, was how little we understand of why structures work and how much of our recent experience with airplanes and bridges has been only after structures failed catastrophically. Bonds - In Rodrigo Quian Quiroga's "Neuroscience Fiction" there is an often reported case of visualizing Jennifer Anniston (they used celebrities) and mapping neurons to see how the system works... Information in the brain is stored in what looks like a network map with a "key" if you're familiar with database programs. So there is a unique neuron that tries into trees of neurons in the visual cortex for images of the actress, tied to ones with 'Friends' (pun), her other movies if you've seen them, as well as auditory neural patterns that correspond with her name or or voice (way more complex but that's the gist from evidence I've seen so far). Now these can be flavored with different neurotransmitters with likeness or similarity as in Robert Cialdini "Influence" which would make sense since aspects of that person's neural trees could be similar and thus understood and resonate with your own (having common interests like you tubers, politics, hobbies, etc). It could be flavored with oxytocin as in love (Dr. Huberman had a video with love as a mapping function as well with loved ones been wired in close with an expectation of how long it would take to see them and the pain of losing them and not being able to find them). But there are also negative painful flavors that would keep them in the network but not the traditional one as they would be adversarial links or repulsive bonds or fractures in this case. So similar to chemistry one could make much broader and more diverseness links with not only other people but symbolic cues as well pertaining to social structures. Architects and engineers will appreciate the clear and cogent explanations of the concepts of stress, shear, torsion, fracture, and compression. If you're building a house, a sailboat, or a catapult, here is a handy tool for understanding the mechanics of joinery, floors, ceilings, hulls, masts--or flying buttresses.

We might start by asking how it is that any inanimate solid, such as steel or stone or timber or plastic, is able to resist a mechanical force at all – or even to sustain its own weight. This is, essentially, the problem of ‘Why we don’t fall through the floor’ and the answer is by no means obvious. Biological structures are a product of nature’s evolution. Our bodies, for example, consist of structures like bones and muscle tissue, flower petals are, and tree bark is other examples of natural structures. Moreover, for a book about structures, this book is structured very poorly. There's no conclusion and each section of every chapter is a completely different subject without clear coherence or story. the failure of a structure may be controlled, not by the strength, but by the brittleness of the material It is energetically advantageous for a weight to fall to the ground, for strain energy to be released -and so on. Sooner or later the weight will fall to the ground and the strain energy will be released; but it is the business of a structure to delay such events for a season, for a lifetime or for thousands of years. All structures will be broken or destroyed in the end -just as all people will die in the end. It is the purpose of medicine and engineering to postpone these occurrences for a decent interval."Structural Engineering formulas are giving all of you data about those recipes that are available in this book. so if two droplets join up to make one droplet of twice the volume, there is a net reduction in the surface area of the liquid and therefore the surface energy. So there is an energy incentive for drops in an emulsion to coalesce and for the system to segregate into to continuous liquids. A palintonton or ballista is much more effective than a trebuchet in doing work. trebuchets could only store about 30K joules of potential energy, while ballistas were ~10X that ductile materials are those that, when pulled in tension, have stress-strain curves that depart from Hooke's law, after which the material deforms plastically (think chewing gum