NOTICE
Mel's Video Of The Day
has moved to:
http://mvotd.com


All - Most Viewed
Funny Baby Climbing Over Baby Gate Compilation (2018)
Funny babies climb over gates. No gate will stand in the way of these babies! Watch cute babies escape try not to laugh!!

Video Comments (0) / Posted By: Mel
Primitive Technology: Simplified blower and furnace experiments
Blower description The purpose of this project was to test a simplified blower design connected to a furnace. I purposely did this to show that people in most natural environments should be able to replicate this design without difficulty. This blower differed from the previous one in several ways to simplify the construction method. Firstly, the impellor was simply a stick as a rotor with a 40 cm wide rectangle of bark tied into a split in its end with a bark fibre cordage. A stone with a pit carved into it acted as a socket for the lower half of the rotor to spin in. If spun in the dirt the rotor can drill down and the position of the impellor can reach ground level causing the blades to bump into rocks and dirt. Later, I plastered the stone socket into the ground with mud to hold it securely in position (not shown in the video, just be aware of this solution if the socket shifts around too much). Secondly, the housing for the blower was made in situ of ordinary mud (dirt and water on site). It was a bit more than 40 cm in internal diameter. The walls of the housing were solid mud and the roof was made of sticks covered with mud. An opening more than half the length of the impellor was left in the roof to remove the impellor for maintenance and to admit air into the blower during operation. In use, the portion of this opening near the front of the blower was covered with a tile. If left opened the blower still worked but covering it improved performance by preventing air escaping near the front. In places where water is not available, a housing shaped pit covered with sticks and dirt might work instead. Finally, a simple length of cordage was used to drive the rotation of the impellor. This cord was placed in a notch carved into the top of the impellor rotor. The cord was wrapped around the rotor about 2.5 times. During operation the cords were pulled outwards causing the rotation. When fully unwound, the momentum of the impellor then wrapped the cord back around in the other direction. Then the cords were pulled outwards again causing the impellor to spin in the other direction. Note that this is a centrifugal blower with a symmetrical housing, therefore it doesn’t matter whether the fan spins one way or the other (clockwise or anti clockwise), the blower will always suck air in to its open top and force it into the furnace. This design is easy to make and use. It can be made with minimal materials by unskilled people. The impellor design is simple yet effective. A stick, some bark and lashing of some sort should be available in most areas. The housing being made from mud, is easily sourced also. For the drive mechanism, I chose this method because the first blower I built had too many parts. There was a frame made of wood and vine to hold the rotor in place which kept causing issues with the rotor seizing or jumping out of the socket. Also, the bow that was used to drive the rotor added unnecessary complexity. In the new design, the simple cord in the notch of the rotor did away with the frame and the bow of the old design and the associated difficulties. Furnace experiments The blower was used to power a furnace attached to the front of it. Note that with minimal materials, the blower could simply force air into a hole in the base of the furnace and work satisfactorily. But I wanted to test a different configuration so I used clay grate from a previous kiln I made. Fuel in the form of wood and charcoal was used in this furnace by being placed on top of the grate instead of under it. During operation, the blower forced air up through the grate into the burning fuel bed increasing the rate of heat production relative to the use of natural draft (convection) alone. I made 3 pots and fired them with charcoal. The first pot was painted with iron bacteria (iron oxide being the active ingredient). When fired, the oxide melted slightly showing minimal glazing. The clay became quite hard, possibly stoneware. The second pot was painted with wood ash and placed on a three sided clay plinth to hold the pot in the position of highest temperature in the fuel bed. The pot softened and sagged apart catastrophically. But the ash glaze gave a dark green smooth finish (difficult to see in the video). Finally, a pot was place upside down on the grate and a cylindrical brick made of iron bacteria, charcoal powder and wood ash was put on top of this. The brick melted over the pot, covering it in a viscous blob of slag rather than a thin glaze. On inspection, the slag had 1mm sized spheres of metallic iron in it. Some of these were picked out and stored in a pot. The reason for experiments like these to gain knowledge that might be of practical use in future projects that have not yet been determined.
Added: 27th August 2017
Views: 1465
Tags

Video Comments (0) / Posted By: Mel
Cutting The Line Prank (VICTIMS GET IMPATIENT)
As good Samaritans are waiting in line for their daily dose of caffeine, "Lost Tourists" stop by to ask for directions. In the meantime, a line of 20 impatient strangers cut the coffee shop line , which leaves our poor victims last of the bunch, begging for an explanation.

Video Comments (0) / Posted By: Mel
8 Extreme Tracked Vehicles You Must See
These extreme off-road vehicles will impress you.

Video Comments (0) / Posted By: Mel
Kids Reacting to Grass Compilation (2018)
Funny babies reacting to grass for the first time! These cute babies don't know how to feel about grass, try not to laugh or say aww.

Video Comments (0) / Posted By: Mel
Climbing Cats | Funny Cat Compilation 2017
Cats are the ultimate climbers! Chairs, stairs, refrigerators, even legs; you name it, they can probably climb it! Watch these climbing cats in action in our brand new funny cat compilation!

Video Comments (0) / Posted By: Mel
Cirque du Soleil - Behind The Scenes
Before the incredible Cirque du Soleil shows debut, the performers put in thousands of hours of practice to perfect their routine.

Video Comments (0) / Posted By: Mel
People Are Awesome - Top 25 Videos of 2017!
In case you missed any here in one compilation are all 25 of the most viewed People are Awesome videos of 2017. Featuring everything from parkour to wingsuit rodeo to skateboarding! Enjoy!

Video Comments (0) / Posted By: Mel
Wayward Horse Galloping on Highway Leads Police Chase
Florida police officer Arthur Madden couldn't believe what he saw on his way to work one morning. "I look off to my right and I see this horse running northbound in the southbound lanes," he told InsideEdition.com. He was determined to stop the horse. But the wayward equine wouldn't listen. Eventually, officer Madden was able to convince the horse, which was traveling under approximately one horsepower, to pull over.

Video Comments (0) / Posted By: Mel
Best Pets of the Week | October 2017 Week 3
It's time for another Best Pets of the Week! From amazing Halloween costumes for your pet to cats swinging from chandeliers, here are some of the best pet videos on the internet!

Video Comments (0) / Posted By: Mel
Talk about your death while you're still healthy | Michelle Knox
Do you know what you want when you die? Do you know how you want to be remembered? In a candid, heartfelt talk about a subject most of us would rather not discuss, Michelle Knox asks each of us to reflect on our core values around death and share them with our loved ones, so they can make informed decisions without fear of having failed to honor our legacies. "Life would be a lot easier to live if we talked about death now," Knox says. "We need to discuss these issues when we are fit and healthy so we can take the emotion out of it -- and then we can learn not just what is important, but why it's important."
Added: 11th February 2018
Views: 1462
Tags TEDTalk TEDTalks communication death family personal growth life

Video Comments (0) / Posted By: Mel
Flying Fish Picked Off From Above And Below - The Hunt - BBC Earth
Flying fish can make powerful, self-propelled leaps out of water into air, where their long, wing-like fins enable gliding flight for considerable distances. It appears these Flying Fish are in a no win situation, picked off above the surface by Frigatebird's and devoured underwater by the Dorado.

Video Comments (0) / Posted By: Mel
CAT RACING DAY
Who wins? This FUN video shows Didga and Boomer race through the house jumping over 3 hurdles at full running speed, even some slow motion over the hurdles really showing how graceful cats are.

Video Comments (0) / Posted By: Mel
Crusoe: James Dog, at Casino Baden Baden in Germany
Crusoe visits the prestigious, elite, aristocratic Casino Baden Baden in Baden Baden, Germany, where he plays roulette like James Bond (James Dog) with his new lady friend, Doggi.

Video Comments (0) / Posted By: Mel
Glennis Grace: Singer Slays Run To You by Whitney Houston - AGT 2018
Glennis flew from the Netherlands to grace America with her stunning voice and wow the crowd with her rendition of "Run To You" by Whitney Houston.

Video Comments (0) / Posted By: Mel
Scaredy Cat
Kinda like a cat reacting to a horror movie, but it's just Marm in the bathroom sink getting scared of my creepy hand! :)

Video Comments (0) / Posted By: Mel
Hugging Rescue Dogs Get Cutest New Brother
Hugging Rescue Dogs Get Cutest New Brother | Both of these dogs had a lot of trouble finding a home, but they got lucky and ended up in the perfect family - and now they're making room for a super cute new little brother to join their crew.

Video Comments (0) / Posted By: Mel
Funny Jack Russell Terrier 2017 # 9
Press Thumb Up and Join Pet's World(Subscribe) Please Share If you love This VDO and need it more Thank you.

Video Comments (0) / Posted By: Mel
Monarchs by the Millions: Welcome to Butterfly Forest
The largest insect migration in the world ends each year in Michoacan, Mexico. Millions of monarch butterflies travel from the United States and Canada to pass the cold months in the towering trees of this beautiful forest. On their incredible journey, the butterflies travel around 2,800 miles.

Video Comments (0) / Posted By: Mel
Funny Jack Russell Terrier 2017 # 8
Press Thumb Up and Join Pet's World(Subscribe) Please Share If you love This VDO and need it more Thank you.

Video Comments (0) / Posted By: Mel
The Solar Christmas Experience
Can you run solar panels in the middle of the dark Swedish winter? The sun farmers, Lars and Ingegard Andersson in a small town called Solvesborg, uses solar panels and a storage battery to power an extraordinary Christmas light show. With a good conscience.
Added: 17th December 2016
Views: 1450
Tags

Video Comments (0) / Posted By: Mel

Welcome Guest!

Mel may receive an affiliate payment from companies linked to on this website.