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This is cavitation inside a piston diaphragm pump. Most engineers spend their entire careers hearing this destructive phenomenon. Almost none ever get to see it with their own eyes. When pressure drops below a critical threshold, liquid instantly flashes into vapor, creating thousands of microscopic bubbles throughout the system....

521,300 görüntüleme • 23 gün önce •via X (Twitter)

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Apparently, I saw this video online and I decided to share. What this worker is applying is called bitumen, or what many of us know as bituminous coating. Most people think a wall is a solid, impenetrable block, but in reality, it is more like a sponge. Concrete and blocks have microscopic pores that pull water from the earth through a process we call capillary action. This thick black substance is the shield that stops that water from climbing up into the house. It is not about making the wall look good because this part will be buried under the dirt forever. It is about creating a skin that water cannot breathe through. When do you need to do this? The need for this arises because the soil is a very aggressive environment. Water is not your only enemy.. The ground also contains salts and sulfates that want to eat away at the cement. If this moisture finds its way to the steel bars inside the columns, those bars will start to rust. And when steel rusts, it expands, and that expansion is what cracks the concrete from the inside out. This coating is the only thing standing between your foundation and that kind of slow destruction. Thats is why if you see wet patches at the bottom of your walls inside your house, it usually means someone skipped this step or did it poorly during construction. You can apply this anytime you are building parts of a structure that will stay in contact with the ground. It is common in areas where the water table is high or where the soil stays damp for most of the year. This is a one-shot opportunity. Once you backfill the soil, you can never go back to fix it without a lot of expense and a lot of digging. It is about having the foresight to protect the heart of the building while it is still exposed. Please don’t ignore this if you need to. If you ignore it now to save a bit of money, you will be funding the future decay of your own home. I hope this helps.

A.Y.O

75,105 görüntüleme • 3 ay önce

The fascinating concept of Non-Newtonian fluids, which transition from a liquid state to a solid-like state when pressure is applied, has a rich history that spans several centuries. The study and understanding of these peculiar fluids have evolved over time, leading to a wide range of practical applications and scientific insights. One of the earliest references to Non-Newtonian behavior in fluids dates back to the 17th century when Sir Isaac Newton formulated the basic principles of fluid mechanics. Newton's laws of fluid motion primarily applied to Newtonian fluids, which exhibit constant viscosity and flow behavior regardless of the applied force or pressure. However, it soon became apparent that not all fluids behaved in this predictable manner. In the mid-19th century, a scientist named Thomas Andrews made significant contributions to the understanding of Non-Newtonian fluids. Andrews conducted groundbreaking experiments with carbon dioxide, revealing that under high pressure, this gas could transform into a liquid. This observation marked one of the earliest instances of pressure-induced phase changes in fluids. The term "Non-Newtonian" itself was coined in the 20th century to describe fluids that did not adhere to Newton's classical laws of fluid dynamics. These fluids exhibited a variety of behaviors, but one of the most intriguing was their ability to solidify or increase in viscosity when subjected to stress or pressure. One of the most famous examples of such behavior is cornstarch mixed with water, which forms a substance known as "oobleck" that becomes more solid when pressure is applied. In the modern era, Non-Newtonian fluids have found applications in various fields, including food science, engineering, and material science. They are used in products like quicksand, body armor, and even in the development of impact-resistant materials. One of the key insights that emerged from the study of Non-Newtonian fluids is the importance of understanding the relationship between stress and strain, as well as the influence of time-dependent properties on their behavior. This knowledge has led to advancements in rheology, the study of flow and deformation in materials, and has practical implications in areas such as industrial processing, medicine, and the design of everyday products.

Historic Vids

2,632,483 görüntüleme • 2 yıl önce

I love your observation and it will make me discuss the remarkable adaptations that prevents giraffes from passing out and suffering brain damage when bending to drink water and when standing up. ADAPTATION 1 Did you know that the distance from the giraffe's heart to its brain is about 2 meters or more? That's more than the average humans height! Pumping blood up to that great distance and working against gravity is not a joke! That's where the giraffe's heart comes in. A giraffe's heart is unique in several ways. First, it is quite large, weighing up to 11kg and measuring about 2 feet long, which is necessary to pump blood up the long neck to the brain. Second, it has thick walls to generate enough pressure to overcome gravity and push the blood up to the head. ADAPTATION 2 Now, let's move to the neck. Before discussing the incredible roles the valves in the jugular veins perform, let's look at what can happen without them, and then the solution. Problem I: When the giraffe bends down to drink, blood rushes downward to the head. Gravity pulls a huge volume of blood toward the brain, which could cause dangerously high pressure in the head and potentially burst vessels or cause other damage. Solution: They have one-way valves in the jugular veins (the large veins in the neck). These prevent blood from rushing backward uncontrollably into the head when lowered. These valves help regulate and slow the downward flow, avoiding a massive pressure surge to the brain. Also, the neck veins can act as temporary blood storage unit, storing over 1 litre of blood. This prevents blood from flooding the brain and also reduces the amount of blood returning to the heart. As a result, the heart pumps with lower pressure while the head is lowered. This buffers the high head pressure that gravity would otherwise cause. Problem II: When they raise their head up immediately after drinking, blood pressure drops sharply to the brain. A sudden drop could starve the brain of oxygen, causing fainting. This is similar to but much more extreme than the dizziness some people feel when standing up quickly. Solution: When the giraffe raises its head, that stored blood rushes back to the heart quickly. The heart responds with a strong, high-pressure beat that immediately pushes blood back up to the brain, preventing a dangerous drop in cerebral pressure. Impressive right?!

Arojinle

33,422 görüntüleme • 4 ay önce

Sky turned red over Jagannath Puri. On Maha Vishuba Sankranti. The Odia New Year. April 14, 2026. People called it beautiful. I didn’t. I felt a message. Because Jagannath Puri is not just a temple. It is a living cosmic architecture. A point where Bhuloka, the human world, connects to higher consciousness. For some this may be hard to grasp. This space responds. No birds cross above it. The flag moves against the wind. The shadow never touches on the ground. Call it anomaly. Or call it calibration. So when the sky turns blood red above this exact sacred geometry on the first day of the solar year… You don’t ignore it. You decode it. I went looking. Varahamihira wrote about this. In the Brihat Samhita. He called it Dik-Daha. Burning of the directions. Rakta Varna Akasha. A sky that turns to blood. His reading was clear. Agni rises. Mangal dominates. Mangal is Mars. The planet of war. The force of action. The energy that does not wait for permission. And Maa Kali… Not the Kali of fear. The Kali of Mahakaal. She who destroys what has expired. She who removes what blocks evolution. When Mangal and Kali align, it means one thing. The system is about to be reset. Look around. A Manufactured Energy Crisis is building. Fuel prices. Supply chains. Grid stress. When energy is controlled, movement is controlled. When movement is controlled, thought is controlled. The world is moving toward a reset. And the power centre is moving Eastward. Expect a Stock Market Crash. And then comes the trigger. Pakistan is unstable. But instability alone is not dangerous. Desperation is. A fractured state. A pressured army. A proxy pushed to the edge. History shows… such systems don’t collapse quietly. They create events. India will not choose war. But war will choose India. And this time, an endgame. Red is not just warning. Red is Sindoor. The mark of victory. Operation Sindoor is still ON. Inside Bharat… Structural shifts are coming. And the cosmos already spoke. Through Jagannath. Through Mangal. Through Kali. This is cleansing. Every civilization faces this fire. Most collapse. Few evolve. Bharat has faced it before. Bent. But never broken. So the red sky over Puri was not a coincidence. Because the cosmos does not warn, what it plans to destroy. It warns what it expects to rise. And this time… The signal was not subtle.

Dr. Deepessh Divaakaran (Dr. DD)

22,303 görüntüleme • 2 ay önce

The past year has seen me have a renaissance, in the truest sense… I won’t go into details now but will at some point before long. What has brought so much happiness to my life and those around me this past year has been my falling back in love with sport. Cycling has, and always will be, my number one. Yet I’d forgotten that I simply love sport, not for results but for the sheer joy of doing it, I’d completely forgotten that the health of my mind is intrinsically connected to the health of my body. I’ve rediscovered the love I had for sport that existed before the world of professional cycling took over in the way it did. I’ve been pushing myself and trying new things this past year, indifferent to the results, just out having fun and at times going deeper than I thought I was capable of anymore. Last week I got on a TT bike for the first time in a decade, Factor Bikes built me a bike, I’ve been looking at it for two years and decided it was time to get fitted, getting back on it felt like going home. Anyway, the long and the short of this is that it’s inspired me to create a club to inspire and be inspired. A community for us to share our love for getting out there and doing it, because I’ve realized that although I spend most of my sporting life on my own I derive the most pleasure when feeling part of something. It’s in its early days, I’ve called it Sporting Club CHPT3 aka SCC3, I’d love you to check it out and join. It’s still in its infancy, but I hope it’s going to grow into something that will inspire you as much as me.

David Millar

111,669 görüntüleme • 2 yıl önce