Showing posts with label DIY. Show all posts
Showing posts with label DIY. Show all posts

Tuesday, July 14, 2015

French cook Julia Child made "Shark repellent" recipe for CIA like Batman's Oceanic Repellent Bat-Spray

Batman had a lot of gadgets and stuff because he never had superpowers. His superpower was money,which he used to make or buy the best of what is possible. Same with Iron Man.

Some of those things are on the edge of belief, but some things do exist. The Oceanic Repellent Bat-Sprays are used to repell barracudas, whales, manta-rays, and sharks.

Batman used the shark repellent in the duration of the series during the famous scene of the Batman (1966 Movie) when an exploding shark got a hold of Batman's leg and he used the repellent to get it to let go. Another time he used it against a shark when he had the surfing contest against the Joker. The sprays are kept on The Batcopter.


The US CIA collaborated with French master Chef Julia Child to develop Shark Repellent.

It was the height of World War II and reports of shark attacks consumed the media. At least twenty US Naval officers had been attacked by sharks since the start of the war, raising alarm amongst sailors and airmen who increasingly found themselves conducting dangerous missions over shark-infested waters. To boost morale, the Joint Chiefs of Staff requested the Office of Strategic Services (OSS, CIA’s predecessor) to lead the hunt to find a shark repellent.

Julia McWilliams (better known by her married name, Julia Child) joined the newly-created OSS in 1942 in search of adventure. This was years before she became the culinary icon of French cuisine that she is known for today. In fact, at this time, Julia was self-admittedly a disaster in the kitchen. Perhaps all the more fitting that she soon found herself helping to develop a recipe that even a shark would refuse to eat.

Searching for Shark Repellent:

The search for a shark repellent began in July 1942, just a month after the OSS was formed. The Emergency Rescue Equipment (ERE) coordinating committee was created to keep the Armed Services and various government agencies from duplicating efforts when developing equipment to help rescue military members from dangerous situations.

Housed within the OSS until late 1943, the ERE Special Projects division was headed by Captain Harold J. Coolidge, a scientist from the Harvard Museum of Comparative Zoology, and Dr. Henry Field, Curator of the Field Museum of Natural History. Both men were avid explorers, having led expeditions into arctic, desert, and tropical regions. Coolidge had previously organized and accompanied the well-known Kelly-Roosevelt expedition to Indo-China and had a strong working-knowledge about the necessary equipment for survival in the arctic, while Field had led several anthropological expeditions into the deserts of the Middle East.

Coolidge and Field sent a memo to OSS Director General “Wild Bill” Donovan and the Joint Chiefs of Staff, proposing a plan for “unifying and coordinating the work of different agencies in the field of rescue.” Thus the ERE was born, and one of its several projects was the development of shark repellent.

Julia Child worked for Coolidge for a year in 1943 as an Executive Assistant.

“I must say we had lots of fun,” Julia told fellow OSS Officer, Betty McIntosh, during an interview for Betty’s book on OSS women, Sisterhood of Spies. “We designed rescue kits and other agent paraphernalia. I understand the shark repellent we developed is being used today for downed space equipment—strapped around it so the sharks won’t attack when it lands in the ocean.”

Shark Repellent Found:

After trying over 100 different substances—including common poisons—the researchers found several promising possibilities: extracts from decayed shark meat, organic acids, and several copper salts, including copper sulphate and copper acetate. After a year of field tests, the most effective repellent was copper acetate.

According to several memos from mid-to-late 1943, bait tests showed copper acetate to be over 60% effective in deterring shark bites. Other field tests showed even more promising results. Unfortunately, the copper acetate was deemed completely ineffective in deterring attacks from the other carnivorous fish of concern to the Armed Forces: barracudas and piranhas.

To create the repellent, copper acetate was mixed with black dye, which was then formed into a little disk-shaped “cake” that smelled like a dead shark when released into the water. These cakes could be stored in small 3-inch boxes with metal screens that allowed the repellent to be spread either manually or automatically when submerged in water. The box could be attached to a life jacket or belt, or strapped to a person’s leg or arm, and was said to keep sharks away for 6 to 7 hours.

Friday, June 26, 2015

How to make homemade Nutella chocolate breadspread - and other Nutella recipes

Nutella is a brand of chocolate breadspread which is very tasty and similar to other chocolate breadspreads like Chocomate.

Stop eating Nutella and save the forests, urges French ecology minister
Ségolène Royal says Nutella is made using palm oil, which is contributing to deforestation, and urged Ferrero to make the spread with ‘other ingredients’

Today, you can learn how to make Nutella chocolate spread yourself at home.
  The steps are shown in the quick video above.

If you want written instructions, here they are :

Ingredients

  • 2.5 oz (about 2/3 cups) roasted unsalted hazelnuts
  • 3/4 cup sweetened condensed milk
  • 3 oz (about 1/2 cup) unsweetened chocolate, finely chopped
  • 3 tbsp honey, agave nectar, or other liquid sweetener
  • a food processor


In SI units,
  • For 100g of roasted hazelnuts, 
  • use 30g of dark chocolate (70% cocoa) 
  • 30g of milk chocolate (35% cocoa), 
  • 50g of powdered sugar and 
  • 10g of cocoa powder

The first step is to toast the hazelnuts. If you use the roasted unsalted hazelnuts from Oh Nuts, they technically don’t need to be toasted, but I think toasting nuts, even pre-roasted ones, adds a depth of flavor that’s important to the finished product.
So place your nuts in a preheated 350 degree oven, and toast them until they’re brown and fragrant, about 10-12 minutes. Be sure to stir them every 3-4 minutes to keep them from burning. Once they’re toasted, set them aside until they’re no longer hot.

The food processor is going to do most of the work in this recipe, so prepare yourself for a lot of food processor pictures. Start by adding the cooled, toasted hazelnuts to the processor bowl.

Monday, June 22, 2015

How to make giant soap bubbles at home

Make giant bubbles at home



For a kid, its always fun to play with soap bubbles. You could have a lot of fun with bubbles and they make for excellent props in photographs.

But what if you could make bigger and longer lasting bubbles at home. You can, with just a few ingredients.

You'll need

That's all folks. Simple as that

Wednesday, May 27, 2015

How to make an Ornithopter powered by rubber band

An Ornithopter is a bird shaped flying toy made from sticks and paper and wires. They flap like birds and use the beating of the wings to fly. It is a fun weekend project and cheap to make.



Now, there are battery powered ornithopters using electric motors too, but the first models were all simple ones powered by rubber bands.

If you are from India, you can buy an ornithopter online here on Amazon!

There are cheaper ornithopters available too !
Here is a bunch of tutorials on how to make an ornithopter on Instructables.


There are also several videos on how to build your own rubber band powered Ornithopter as below :

How to get N95 Masks in India - कैसे पाएं मास्क? Yellow, White, Blue or Black ?

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