Using depth and wavebreakers together with dams

Using depth and wavebreakers together with dams

A hearing device you can put into your ear to hear above or below the human frequencies of hearing

A hearing device you can put into your ear to hear above or below the human frequencies of hearing.

How to make a person naturally hear above or below the human frequencies of hearing

How to make a person naturally hear above or below the human frequencies of hearing

Update 19-12-2018
Possible methods:
-Exposure
 -Warning: The exposure shouldn't be damaging to the ears. Even if you can't hear it, that doesn't mean it can't damage the ears.

An underwater microscope

A microscope for under water

-Water proof up until ...
-Pressure resistant
-Strong and durable

By Jeffrey Koelewijn from the Netherlands
28-06-2018

Making paint that changes colour when you apply a magnets magnetic field

Changes colour by a magnets magnetic field and changes back to the colour it was when you go over it again.

Update: Better, using the two poles on a magnet. For example the north pole of a magnet makes the paint gray and the south pole of the magnet makes the paint white.

With a very small magnet you can even write or draw something

The paint should be non toxic and durable.

Creating a material that can go from smooth or slippery to rough with high grip

Creating a material that can go from smooth or slippery to rough with high grip

Finding ways to produce very cold long going cold temperatures and short extremely cold temperatures

If nuclear fission of uranium creates constant long going high temperatures and nuclear fusion creates short extremely high temperatures. What can create a lot of constant long going cold temperatures or short extremely cold temperatures ?

Finding out how to generate electricity with coldness

Finding out how to generate electricity with coldness.

Making a map of mars of how exactly it would look like with sea water

Measuring all land hights.
And maps with different sea levels. 

And maybe some possible fresh water places with a different colour.

Finding out why cockroaches and flower beetles can survive very high amounts of radiation

And see if we can biomimic it for as far possible

By Jeffrey Koelewijn
15-06-2018

Recycling power plant steam into what it was used for

Recycling power plant steam into what it was used for

By Jeffrey Koelewijn

Turning an annual plant into a perennial plant

Prolonging it's life

By Jeffrey Koelewijn
09-06-2018

A drone with echolocation to map caves

A drone with echolocation to map caves.
-If the reach is high enough and the maps are clear

By Jeffrey K.
On 08-06-2018

Bigger rooster

At the moment almost all roosters are killed when their very young. Legalising rooster fights and rooster fight videos might save a few and make nice videos.

Maybe roosters can be made bigger. By training them, by putting weight vests on them and weights around their legs which they need to drag daily. Overfeeding them. And selective breeding, letting the biggest reproduce.

I think big rooster meat is much better for man than female chicken meat.

Finding out how bad female fluids are for a man

What do they contain, like how what hormones and how much of those hormones and more. And what do they cause on short term and long term with certain exposures

Finding out what's the best gas for a refrigirator or freezer and making new gasses

Finding out what's the best gas for a refrigirator or freezer and making new gasses

The gas should also be safe for the environment and the ozone lager

JK