World's Invention in 2009

1. Husband Hunting Bra

A model demonstrates the "Husband Hunting Bra" in Tokyo. Under the bra cups is a clock counting down to the date set by the wearer. When an engagement ring is inserted, the countdown stops.

2. Make-The-Putt-Bra
A model demonstrates Triumph's "make-the-putt-bra", which turns into a putting mat for the busy golfing woman. The garment has slots in which to store tees on either sides of the cups when worn and can roll out into a smooth putting mat.

3. Bra Dryer
It may look like the latest addition to Madonna's wardrobe, but this device is called the Bra Dryer. The machine can be adjusted to fit the individual bra sizes.

4. Bowlingual Voice
A Tomy employee poses with the Bowlingual Voice, a gadget the expresses dogs' emotion, at the annual Tokyo Toy Show. Tmoy claim the gadget analyses a dog's voice through a wireless microphone attached to its collar and then display its emotion.

5. Fish Hotel
The first Fish Hotel has opened in Amsterdam. The hotel allowed you to drop off your fish when you go on holiday and has a 'tennis court' and 'swimming pool'.

6. Bear Sleeping Bag
What better way to discourage bear attacks when camping in the woods then to make them think you've already been eaten by another bear? Artist Elko Ishizawa has created this sleeping bag for a warm and safe night's sleep.

7. JetLev-Flyer
A man demonstrate the JetLev-Flyer, which powers out two strong jet of water, allowing the wearer to take off and soar nearly 30ft above the ground. Its makers say flight can last up to two hours at 'cruising speed' or around one hour going flat.

8. Robo-Toilet
A Robo-Toilet that sense your movements has been launched. the AutoClose loo keeps track on you using an infra-red beam - and will raise and lower the sear accordingly. The seat closes automatically after you've stepped out of range.

9. Toilet for cat
A Chinese man called Mr Bi has trained his cat to use his toilet. He spent seven years inventing the gadget that allow his pet to flush away her mess. He now plans to sell his contraption to other cat owners.

10. Special Prosthetic finger with USB drive
A computer programmer who lost his ring finger in a motorcycle accident has had it replaced with a USB drive. Jerry Jalava from Helsinki, Finland, has built the special prosthetic finger which he can peel back from the 'nail' and plug into the USB slot on.

11. Personalized Urns
British firm Cremation Solutions have come up with personalized urns that look just like the dearly departed. The firm uses facial reconstruction and 3D mapping software to recreate the face of your beloved.

12. PediSedate
A child demonstrate the PediSedate, which gently sedates youngsters by administering anaesthetic nitrous oxide gas through a headset as the play handheld consoles.

13. Masunaga's Wink Glasses
Masunaga's Wink Glasses are designed to avoid dry-eye when the user concentrates on video gaming or the web. They have a sensor to detect how often the user blinks. The lens fogs when the user keeps his or her eye open for five seconds without blinking.

14. Scarpar Board
The Scarpar Board uses two tank-like tracks to roar across tricky off-road surfaces which would prove impossible with wheels. With a 8hp motor operated by a hand controller, the board can hit speeds of up to 37mph.

15. Motorized La-Z-Boy
The motorized La-Z-Boy chair that Dennis Anderson was driving when he hit a parked vehicle in Proctor, Minnesota in August 2008. Anderson pleaded guilty to drive while drunk. The chair was powered by a lawnmower engine.

16. Isophone
The Isophone - the underwater telephone system designed by James Auger and Jimmy Loizeau. the space-age device means you can communicate with other swimmer while splashing around in the pool.

17. See-Through Concrete
Scientist in Hungary has invented See-Through Concrete. Filled with optical fiber that run from one end of a poured piece of concrete to the other, these prefabricated blocks and panels effectively transmit light from one side to the other.

18. Millenium Falcon Bed
Kayla Kromer, a 26-year-old first grade teacher from Austin, Texas, dressed as Prince Leia, lies in her Millenium Falcon bed.

19. Eye-Opening Trousers
An American artist has created Eye-Opening Trousers that wink at people as you walk. William Jones' 'Winkers' feature a pair of eyes that stare out from the wearer's buttock.

20. Bikini Jeans
These Japanese Bikini Jeans cross jeans with a thong - an attached bikini bottom secures the low-slung jeans to the hip.

21. Sunday Pants
A man demonstrates the Sunday Pants designed for coached potatoes - joggers with a detachable tablecloth and pockets for remote controls.

22. Crystal-Coated Bling-kini
Designer Pistol Panties has created the Swarovski crystal-coated Bling-kini, which was due to go on sale at Selfridges for £ 2,000 or £ 100 per square centimeter.

23. Scissorhand
Meet the real-life Edward Scissorhands. Valentino LoSauro cuts the hair of Shannan Stewart with his revolutionary Clawz, which he claims cut hair twice fast as normal shears, in Fort Myers, Florida, USA. He spent two years developing his invention.

24. Cartrider
Combining the idea of shopping cart and a bicycle, Korean designer Jaebeom Jeong has come up with Cartrider.

25. Glass Toaster
Burned or underdone toast could soon be a thing of the past thanks to a new Glass Toaster that lets you see your bread as it browns.

26. Funnel Glasses
Kenji Kawakami, founder of the International Chindogu Society demonstrates his Funnel Glasses, designed to guide eyedrops into the eye, in Tokyo. The word "Chindogu" translates as "weird tools" and Kawakami has inveted hundreds of absurd items.

27. Hayfever Hat
...including a Hayfever Hat which dispenses a continuous flow of toilet paper, and an alarm clock with the snooze button in the middle of a bed of sharp pins, designed to keep the user awake.

28. F1 Limo
Canadian inventor Michael Pettipas poses on the Bonneville salt flats in Utah with his Formula One Limo which seats six passengers, has an eight-liter engine and can reach speeds of 140 mph.

29. Amphibi Bus
The Amphicoach, an amphibious 50-seater luxury coach, is used in Malta. It is capable of 70mph on land and eight knots across water.

30. Snooker Table Car
Car designer Sudhakar Yadav drive a car in the shape of a snooker table in Hyderabad, India. It has three wheels with a 150cc engine and it can run at a top speed of 45kph (28mph).

Mercury Skate

The main purpose of designing this Mercury skate is to decrease the skater’s fatigue and provide them an easier and smoother ride on the pavement with the least harms. If you’ve ever skated on a paved surface you had experienced a vibration feelings on your heel and sometimes it causes you to feel uncomfortable. This vibration will translate itself from heel to knee joints which is harmful not just for knees but for the eyesight as well.



This general problem of line skates has been considered in this Mercury skate design. It has a new style of frame, fixing system and a damper to absorb the harmful vibration mentioned above and also it can help the skaters to accelerate faster and gain a higher speed.

Lemon battery

Creating a battery from a lemon is a common project in many science text books. Successfully creating one of these devices is not easy.

Batteries consist of two different metals suspended in an acidic solution. Copper and Zinc work well as the metals and the citric acid content of a lemon will provide the acidic solution.

Batteries like this will not be able to run a motor or energize most light bulbs. It is possible to produce a dim glow from an LED.

The lemon: A large, fresh, "juicy" lemon works best.
The nail: Galvanized nails are coated in zinc. I used a 2" galvanized common nail.

The penny: Any copper coin will work. (Canadian pennies from 1960 - 2001 all worked)

Creating the battery: Insert a penny into a cut on one side of the lemon. Push a galvanized nail into the other side of the lemon.

The nail and penny must not touch

This is a single cell of a battery. The zinc nail and the copper penny are called electrodes. The lemon juice is called electrolyte.

All batteries have a "+" and "-" terminal. Electric current is a flow of atomic particles called electrons. Certain materials , called conductors, allow electrons to flow through them. Most metals (copper, iron) are good conductors of electricity. Electrons will flow from the "-" electrode of a battery, through a conductor, towards the "+" electrode of a battery. Volts (voltage) is a measure of the force moving the electrons. (High voltage is dangerous!)

I have connected a volt meter to our single cell lemon battery. The meter tells us this lemon battery is creating a voltage of 0.906 volts.

Unfortunately this battery will not produce enough current (flowing electrons) to light a bulb.

To solve this problem we can combine battery cells to create higher voltages. Building more lemon batteries and connecting them with a metal wire from "+" to "-" adds the voltage from each cell.

The two lemon batteries above, combine to produce a voltage of 1.788 volts. This combination still does not create enough current to light a small bulb. Note the red wire connecting the batteries is joined from "+" (penny) to "-" (galvanized nail)

Four lemon batteries create a voltage of 3.50 volts. We should be able to light up a small device like an LED (Light Emitting Diode).

Note the connecting wires go from "+" to "-" on each battery

To turn on an LED you must determine the "+" and "-" connections. If you look closely at the red plastic base of an LED you will notice a "flat" spot (indicated by arrow above). The wire that comes out beside the flat spot must connect to the "-" side of a battery, the other wire to the "+" side.

In the above image, electrons flow from the "-" (nail) end of our lemon battery through the LED (making it glow) then back to the "+" (penny) end of the battery. This is an electronic circuit. The LED glows dimly with this configuration.

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