總計: 1295 / 1293

附加項

一种有刺的树种,也生长在营养贫瘠的土壤中。根据传说,基督的荆棘冠也是由这种树木制成的。

它是一种松科木材,可以多种用途。北美印第安人也称它为生命之树。今天它是受欢迎的观赏植物。

最受欢迎的赠送花卉之一。在保加利亚,它在工业规模上用于香水生产。

在卢戈尔溶液存在下用光学显微镜检查土豆淀粉包涵物。

群体植物没有真正的组织。这些生物近距离看起来如何?

我们如何制造一种能点燃一切的安全火柴?

我们制作了一辆用空气和水-空气混合物驱动的玩具车。

Let's measure the capacity of the lungs using nothing but a plastic bottle, a rubber tube and a plastic bowl.

In this experiment, you will learn how to place a boiled egg into a flask with a narrower neck.

How can you drop a matchbox so that it always falls on its smallest side?

How can you straighten a bent matchstick?

Collisions deform real cars. But why don’t they deform toy cars?

Why does light make the vanes of a radiometer spin?

Let's see what happens when you fix two burning candles and then two bottles of water to a seesaw.

This experiment demonstrates the laws of physics behind the roly-poly.

This experiment demonstrates the laws of physics behind the wooden woodpecker.

Let’s see how you can build a gun out of a plastic tube and some basic kitchen items.

A cylindrical body and a double cone are released on a slope. What happens?

This experiment models a way to raise the Titanic to the surface with nothing but a glass of fizzy water and some raisins.

How can you make a ping-pong ball defy gravity with the help of a straw?

Why do glasses break so easily when you wash them?

This experiment sets out to find the balance point of a paper strip.

Bet I can inflate a bin bag faster than you can.

What is the secret of the juggling stick? Let’s uncover it together.