The 5 truths startle you because you don't know anything

There is no need to be too sad, because the world around us always has mysterious things.

Indeed! The world around us still has so many wonderful things, in which there are truths that are always present in life but many people do not know because . do not pay attention to it.

1. According to you, does the fire have a shadow?

And this is the answer for you.

The ball is formed when the light is blocked.

Basically, the ball is formed when the light is blocked. But fire is itself a light source, so light will often pass through it.

However, fire is an oxidation reaction between the material and oxygen, so if the amount of carbon containing carbon is thick enough, it can block light and form a shadow of fire.

This shadow is dim, only visible when the rear light source is larger than the light source of the flame.

And this shadow is very blurry, often only visible when the light source from behind is stronger than the light source of the fire.

2. Secret to prevent tearing when cutting onions: chewing gum

The female cooks must also hold their breaths several times when cutting onions, if they don't want this phenomenon to happen.

Tears actually do not come from the eyes but come from the lacrimal glands that lie next to the eye sockets.

However, just a chewing gum costs 1,000 VND, you can completely prevent this from being easier.

Tears actually do not come from the eyes but come from the lacrimal glands that lie next to the eye sockets. This lacrimal gland will react when stimulated.

Just a chewing gum costs 1,000 VND, you can completely prevent this easily.

When cutting onions, there is an unsustainable chemical, syn-propanethial-S-oxide is released into the air. This substance irritates the lacrimal glands, causing us to shed tears.

But why does chewing gum help improve this? Experts say the masticatory act has inadvertently caused us to breathe primarily by mouth, making the amount of chemical irritating eyes no longer strong enough to cause tearing.

3. Do you know what the hole in the pop-up can is used for?

Why is there such a pretty . ungainly hole?

What the hell is this hole to do?

In fact, everything has its cause, not the manufacturer deliberately "playing slack" us. Its purpose is to do like this.

To keep that straw.

Because if not kept, the gas bubbles will not leave your straws alone, making it jump around, even shoot out.

Because if not kept, the gas bubbles will not leave your straws alone.

4. How do I know if the battery is full or empty?

Very simply, drop that battery down like this.

100% fully charged battery won't bounce at all.

You can see that the 100% fully charged battery won't bounce at all, while the batteries are out or about to run out.

Why so? An unused battery pack includes zinc powder mixed with a gel containing electrolytes - usually potassium hydroxide. This mixture is separated through a porous film with manganese manga powder mixed with carbon powder.

When the battery is used, the manganese manga will turn into manga oxide, causing a change in both chemistry and physics. It is the mixture of oxides of carbon and carbon that reduces the "bouncing" properties of the original mixture, so the battery when used up will have greater bounce.

5. Do you know - when you sleep you can't smell anything

It is also quite strange to hear, because we often hear things like: "waking up thanks to the smell of nose-and-nose aroma of coffee" in popular love stories.

Cells that sense the taste in the brain automatically turn off when they sleep.

But the truth is that we can't smell anything while we sleep, because the cells that sense the taste in the brain automatically turn off when they sleep. This means you will not be able to smell the coffee smell at least until you wake up.

But although you don't feel the smell, you will still be able to wake up if you breathe in dangerous types of smoke, because they still affect other parts of the brain, causing the brain to trigger an alarm, get you out. Good sleep.