Tag: omg

smol-and-passionate:

Okay. So… (you know it’s going to be good when I start out like this)

My mom is still looking for a job. I’ve been helping out with getting groceries every now and then and the $100 Christmas Gift that my parents didn’t know was from me. However, when I went to the store today I found out that I didn’t have enough money in my card (Avast Antivirus has this asshole thing where they take money out of your account as an automatic renewal and they make it hard for you to know about it). I had already paid for more than half of the whole thing with a gift card and four paper dollars, but there was still like $19 left. I was a little upset, understandably, and the cashier asked me if I wanted to void the transaction.

Before I could answer though, the gentleman behind me said ‘I got it’. I don’t recall having seen this man before in my life; he just looked like your typical Utah Mormon guy. I apologized and of course said he didn’t have to, but he insisted. I apologized and thanked him again.

I haven’t been on the receiving end of that sort of thing and it just confused me and made me feel a little uneasy. But God, I’m so grateful. It was such a little thing that I was able to fix when I got home, but it was worth $19 dollars to this guy to do something nice.

Again, I’m really grateful for him and his generosity. That was so kind of him. I only wish good things for him and, when I’m able, I think I’ll pay it forward and donate some more money to Puerto Rico or something.

velvetyhugs:

teampokepals76:

gservator:

radglawr:

bishopmyles:

Nope.

when your teacher is trying to teach you how to cast fireball

+3 to Intellect

If anybody’s wondering what’s happening here, this clip made it onto Outrageous Acts of Science, and they explained that this teacher was demonstrating the Leidenfrost effect, which is basically when you place a droplet of a liquid on a surface that’s far hotter than its boiling point. The part of the drop touching the hot surface turns into vapor and forms a cushion that the rest of the drop rests on top of, which causes it to skid across the floor so quickly.

The substance the teacher uses in the video is liquid methane. But methane has a really low boiling point. Like, about −160 °C low. So once it touches the comparatively hot floor, the Leidenfrost effect comes into play, and it slides across the floor. The issue is though, methane is colorless, so you can’t normally see it. Thankfully (in this demonstration), methane is also very flammable, so he sets it on fire before dumping it onto the floor so you can see it as it moves.

Definitely a cooler demonstration of the Leidenfrost effect than dropping a little water in a hot pan.

Or hotter, if you like puns.

THANKS FOR EXPLANATION SCIENTIFIC SIDE OF TUMBLR