Ken Kuang

The new chief of New Zealand’s Army was greeted with a haka 🇳🇿🇳🇿🇳🇿

The traditional Māori war dance was performed by personnel from the country’s Defence Force as Major General Rose King arrived at their headquarters... 😂 😂
Source: https://lnkd.in/g5TuJfRZ
Watch 📹 here 👇👇

When the would-be top performer is no longer restricted by the senior management... 😂

【Spontaneous Synchronization, by UCLA】
If you put a series of out of phase metronomes on a movable surface, they will synchronize themselves according to what is called a Kuramoto model of synchronization [explanation: http://bit.ly/2qwVE9N] [source: https://buff.ly/3qY4gSy] [read more: https://buff.ly/2sYxvr3]

Is it true that some babies know to swim naturally?

Yes, while it is true that babies have a natural instinct for holding their breath and making swimming motions in water, it is important to clarify that babies do not actually know how to swim in the technical sense. The instinctive behaviors exhibited by babies in water are known as the “swimming reflexes.“

Here are a few swimming reflexes commonly observed in infants:

1. Dive reflex: When a baby's face comes into contact with water, their body automatically reacts by holding their breath, slowing down their heart rate, and narrowing blood vessels to conserve oxygen.

2. Swimming or paddle reflex: When a baby is placed in water face down, they may instinctively move their arms and legs in a paddling motion. This reflex is believed to be a primitive survival mechanism.

3. Palmar grasp reflex: If a baby's palms are touched or come into contact with water, they instinctively close their hands, which can help them “grab“ onto objects, including someone's fingers, for support in the water.

While these reflexes provide some innate abilities in water, they are not indicative of true swimming skills or the ability to navigate water safely. Babies should never be left unattended in water, even if they display these reflexes, as they lack the necessary motor skills, strength, and coordination to swim independently.

It is crucial for parents and caregivers to prioritize water safety by providing constant supervision, using appropriate flotation devices when needed, and ensuring a safe environment around water for infants and young children.

【The 1,000 year old windmills of Nashtifan, Iran】
In the small village of Nashtifan, Iran, some of the oldest windmills in the world, with what may be the earliest windmill design in the world, still spin. From National Geographic:
Made of natural clay, straw, and wood, the windmills have been milling grain for flour for an estimated 1,000 years. The vertical axis design is probably similar to the windmills that were invented by the Persians around 500 C.E.—a design that slowly spread through the world and which was later adapted by the Dutch and others.“

1974 Camper

Video of the perfect synchronized touchdowns at SFO (San Francisco Airport) with a United 737 MAX 9 and Alaska E175 landing together.

📹 NickFlightX

Stunning footage has emerged of the Boeing 777X operating its validation flight in Le Bourget ahead of the Paris Air Show (#PAS23), starting on Monday.

The Boeing 777X is an advanced and highly anticipated aircraft model developed by Boeing Commercial Airplanes. It is an extension of the popular Boeing 777 series, incorporating several technological advancements and improvements. The 777X is designed to offer enhanced efficiency, improved passenger comfort, and increased range compared to its predecessors.

One of the key features of the Boeing 777X is its use of new, efficient engines. The aircraft is equipped with General Electric GE9X engines, which are the largest and most powerful engines ever built for a commercial aircraft. These engines provide increased fuel efficiency and reduced emissions, making the 777X a more environmentally friendly option. The 777X also features folding wingtips, allowing it to fit into existing airport gates while still providing the wingspan necessary for efficient flight.

Passenger comfort is another area where the Boeing 777X excels. The aircraft boasts a spacious and comfortable cabin, with larger windows, improved lighting, and advanced soundproofing technology to create a more pleasant flying experience. The cabin layout offers various seating configurations, including options for more premium classes and larger overhead storage compartments for increased convenience.

The Boeing 777X promises to be a game-changer in the long-haul commercial aviation industry, offering airlines and passengers a combination of improved efficiency, advanced technology, and enhanced comfort. With its innovative design and state-of-the-art features, the 777X is expected to revolutionize air travel and become a popular choice for airlines seeking a reliable and efficient aircraft for long-distance routes. #B777x #Boeing777 #aviation

Video Credit: Firas Baghdadi

Interesting: That's how spoons are manufactured!

Credit: Crafty Panda

Every year locals of Lake Chippewa, Wisconsin, have to push back an island back into place by boats!

Read more: https://lnkd.in/g338Sbz9

Cred: AirFox Photography

Ever wondered why the big trucks have steel bars hanging from the truck's platform bed?
Those steel bars hanging from the truck's platform bed are known as a “rear underride guards” or “rear impact guards.” They are designed to prevent vehicles from sliding underneath a trailer during a rear-end collision. This design saves lives!
#scienceandtechnology #engineering

Where Art & Electronics Merge: PCB CNC milling

PCB CNC milling refers to the process of using a computer numerical control (CNC) milling machine to create printed circuit boards (PCBs). CNC milling machines are capable of precise and automated cutting, drilling, and routing operations, making them suitable for producing PCBs with high accuracy and complexity.

Here is a general overview of the PCB CNC milling process:

1. Design: Create a PCB design using computer-aided design (CAD) software or a PCB design tool. This design includes the circuit layout, component placement, and copper traces.

2. CAM Preparation: Convert the PCB design into a format suitable for CNC milling using Computer-Aided Manufacturing (CAM) software. The CAM software generates the tool paths and instructions for the CNC milling machine.

3. Material Preparation: Start with a copper-clad board, usually made of a fiberglass composite material. The copper layer acts as the conductive traces. Cut the board to the desired size, ensuring it fits within the CNC milling machine's working area.

4. Fixturing: Secure the PCB material onto the CNC milling machine's work surface using clamps, double-sided tape, or other appropriate methods. Ensuring proper alignment and stability is crucial for accurate milling.

5. Tool Selection: Choose the appropriate milling bits or drills for the desired operations, such as routing out the board outline, drilling holes for components, and milling traces.

6. CNC Milling: Load the CAM file into the CNC milling machine's control software and configure the machine parameters, including feed rate, spindle speed, and depth of cut. Start the milling process, allowing the machine to precisely remove unwanted copper and drill holes according to the design specifications.

7. Inspection and Cleaning: Once the milling process is complete, carefully inspect the PCB for any errors, such as broken traces or incomplete holes. Use appropriate methods to clean the board, removing any debris or residue from the milling process.

8. Finishing: After inspection and cleaning, the PCB may undergo additional processes like solder mask application, silk-screen printing, or surface finish (such as immersion gold or HASL) to protect the copper traces and facilitate soldering.

9. Testing: Perform electrical testing and continuity checks on the finished PCB to ensure it functions as intended.

PCB CNC milling provides flexibility and precision for small-scale or prototype PCB production. However, it's important to note that CNC milling may not be as efficient as other manufacturing methods for large-scale PCB production, where methods like PCB etching or photolithography are commonly employed.

When you're on a plane and accidentally catch a Falcon 9 liftoff.

Video: chefpinkpr / TikTok

Interesting: A series of famous optical illusions that can be interactively tested.


Video: Levandov_2

【World's Largest Firework - Japan's Yonshakudama firework 4尺玉】
Japan's Yonshakudama firework that was made up of 1,000lbs of explosives and measuring 48“ diameter.
The firework, understood to be the biggest in the world, weighs 930lb, rises to 2,700ft and has a bloom diameter of more than 2,400ft on July 3, 2014.
The firework was created by Honda Masanori's Katakai Fireworks Co in Niigata Prefecture, Japan

How Does the Regenerative Suspension System Work?

The Regenerative Suspension System is a type of suspension system which recovers the energy from mechanism that converts the rumbling, kinetic, damper movements of the suspension into the electricity. The converted electricity goes either directly to an electric motor immediately (or) store in the battery until needed.

Video: Gig Performance

The Incredible Hydrophobic Qualities of Icelandic Eiderdown

Eiderdown, sourced from the nests of Eider ducks in Iceland, has long been revered for its exceptional insulation properties and luxurious comfort. However, recent studies have uncovered an additional awe-inspiring aspect—its natural resistance to water!
The feathers of the Eider duck possess a unique microstructure, which repels moisture and prevents water from permeating the down clusters. This remarkable hydrophobicity ensures that Icelandic Eiderdown remains dry and maintains its insulating abilities even in the most challenging of conditions.
Imagine the possibilities! From enhancing outdoor gear and apparel to revolutionizing bedding materials, the hydrophobic qualities of Icelandic Eiderdown hold tremendous potential across various industries. Not only can it offer superior protection against moisture, but it also contributes to the longevity and durability of the products.
Beyond its practical applications, this discovery serves as a testament to the wonders of nature's design. The intricate adaptations found in Icelandic Eiderdown exemplify the incredible resilience and resourcefulness of our natural world.

Video Source: https://lnkd.in/gyJwcK_B

Cats are Smart: Interesting cat behaviours!

Cat presented with increasingly smaller cardboard holes through which it needs to pass.

Cats are generally considered to be intelligent animals. While they may not display the same kind of problem-solving abilities as some other domesticated animals like dogs, cats are still capable of learning and adapting to their environment.
Cats are known for their independent nature, which can sometimes be mistaken for aloofness or indifference. However, this independence is often a reflection of their intelligence, as they are able to navigate their surroundings and solve problems on their own.

Overall, while cats may not be as trainable as dogs, they are still intelligent animals that are capable of learning and adapting to their environment in their own unique way.

A Hard Core SpaceX fan Andrew McCarthy wrote on X: I rented a $17k lens to photograph the recent starship launch in detail. When I aligned and stitched all the photos I took together, it made a unique video showing the entire event from launch to catch. I hope to ride on Starship one day.

Interesting: How a sun hat (or a straw hat) is made 👒👒👒

Via HowThingsWork_

Happy International Men’s Day 👨

International Men's Day (IMD) is celebrated annually on November 19. The day celebrates worldwide the positive value men bring to the world, their families and communities. International Men's Day is also observed to create awareness on several problems that men face. The theme for 2023 is “ZERO MALE SUICIDE”.

Discover the breathtaking Wangxian Valley scenic area in Shangrao, Jiangxi. Home to stunning gorges, peaks, giant rocks, waterfalls, and a variety of Buddhist temples, this newly developed spot is a must-visit for nature and architecture lovers. The houses hanging from the cliffs are a sight to behold and an imitation of an ancient city with its streets and buildings. The construction was done by hand, making it a remarkable feat. Watch this video to learn more about why these buildings were built in cliffs!
#WangxianValley #Jiangxi #scenicarea #Buddhisttemples

This is why it’s called ‘pizza’ 🍕

Joke by World of Engineering！😃😃

Interesting: This is how a green screen is used in filming...

Source: it is from the Dynamo Dream by Ian Hubert

Situated in east China's #Jiangxi Province, Wangxian Valley is renowned for its sea of clouds and the little cottages built along the steep cliffs....

DIY all natural fridge....

Ouch, how a bee stinger works

A bee's stinger is a unique anatomical structure that enables it to defend itself or protect its hive. Here's how a bee stinger works:
1) Stinger Anatomy: A bee's stinger consists of several parts. At the base of the stinger is a venom sac that stores venom. Connected to the venom sac is the stinger itself, which is a modified ovipositor (the organ used by female insects to lay eggs). The stinger is equipped with barbs or hooks that help anchor it in the target's skin.
2) Defensive Mechanism: When a bee perceives a threat, it will attempt to defend itself by stinging. The bee contracts its abdominal muscles, pushing the stinger into the target's skin. The barbs on the stinger prevent easy removal, allowing the bee to continue injecting venom.
3) Venom Injection: As the stinger penetrates the skin, venom is pumped from the venom sac into the target. The venom contains various substances, including proteins and peptides, which can cause pain, inflammation, and other allergic reactions in humans.
4) Detachment: Unlike other insects, bees have a unique stinging mechanism. When a honeybee stings, its stinger gets lodged in the target's skin. As the bee tries to withdraw, the stinger is torn away from its body, causing significant damage to the bee. This detachment results in the bee's eventual death.

The Valdez STOL (Short Takeoff and Landing) Competition
The Valdez STOL (Short Takeoff and Landing) Competition is an annual aviation event held at Valdez Pioneer Field Airport in Valdez, Alaska. The competition is part of the Valdez Fly-In & Air Show, which also includes aerobatic displays, beach landings, balloon busting, flour bombing, and pilot round tables. The event is considered the “grandfather“ of STOL events and showcases the skills and precision of pilots from around the world as they demonstrate their ability to take off and land on a short runway.

Read more: https://lnkd.in/g6qFS4K8

Cool: Thermal imaging camera shows how the human body loses heat when exposed to the cold.

Video: Oli Martin / BBC Earth Unplugged