full episodes downton abbey

This story that Rob has found in the paper seems impossible - what do you think?

This story that Rob has found in the paper seems impossible - what do you think?

Deane and Rob make and test a string telephone with two plastic butter containers. Also, a matchbox string telephone is shown.

This looks like an elegant brush made of bamboo - what do you think it is? rob explains.

Pop-up books are fascinating but very hard to make. Rob's animated face card is much easier, but still a great deal of fun to design and do.

How can you cut this odd-shaped batch of toffee into two equal halves? As Rob reveals, once you think about it the right way, the answer is surprisingly simple.

Deane and Rob present challenging puzzles involving loops and chains made from coloured woollen thread.

In Australia's outback, many have died for lack of water but, as Rob shows, there is sometimes water there if you know where to look, and knowing where to look for it could save your life.

In Australia's outback, many have died for lack of water but, as Rob shows, there is sometimes water there if you know where to look, and knowing where to look for it could save your life.

In Australia's outback, many have died for lack of water but, as Rob shows, there is sometimes water there if you know where to look, and knowing where to look for it could save your life.

A match pushed through a hole in a board magically jumps to another one. As Rob shows, it is an easy trick to set up.

Changes of state -- melting, freezing, boiling, condensing-- involve heat transfer , but rearranging rubber molecules from ordered to disordered has the same effect, as Rob shows with a balloon.

Rob shows how the eye works to create a blind spot in everything we see, and how we get the illusion of light simply from pressure.

How does the brain decipher a picture? Rob shows the importance of masking and perspective in creating illusions of reality

Rob deciphers this impossible coded message easily with red cellophane spectacles.You can easily do the same.