Random Facts #34 + Tech Blog #4

Bricks are mostly air. Same goes for concrete.

Duct Tape was used to fix some things in space, including a helmet if I remember correctly.

Contrary to popular belief, mentors in coca-cola is NOT a chemical reaction. In reality, the fizz is caused by the carbon dioxide in the soda condensing in tiny pits on the surface of the mento, and hen being rapidly released from the bottle. So its not a chemical reaction, but a physical reaction.

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Tech blog #4

Freaking phone keyboard and it'd autocorrect makes posting these a pain.

Day 2 begins of my robotics competition. And this time, its for real. Yesterday was the final practice day using the official set. Today's the day...

Comments

[Silent Echo]

We dont have robotics in sweden

[Final fantasy forever]

How are bricks mostly air?

[TheMajorTechie]

4457652 The mixture that bricks are made from contain a huge amount of air bubbles created from the combination of the various parts.

For example, cement is mostly sand, gravel, and water. Water contains dissolved oxygen and co2, and when the cement sets, the gases escape the evaporating water, leaving pockets of empty space and/or air within the solid product.

[Final fantasy forever]

4457674

Wow. Now THAT's interesting.