【自由研究】10円玉がキレイになる原因は酸なのか?
A popular independent research topic is "making a 10-yen coin sparkle." While it's often said that acid dissolves rust, I'm not sure if this is true. So, I decided to conduct an experiment to see if acid can clean a 10-yen coin. Twitter: / yoidea Instagram: / yoidea Tiktok: / yoidea

▶︎
東大頭脳なら1時間で自由研究は終わる!【マネしないで】

▶︎
Why are people reinventing the sail?

▶︎
【理系】少ないエネルギで自転車を走らせる方法

▶︎
Die Zombie-Simulation, die niemand erklären kann

▶︎
We've Been Using The Wrong Science In Court For 50 years

▶︎
Dieser Flughafen ist ein Clickbait

▶︎
What If Frying Pans Were Made Of Salt?

▶︎
【ガチ研究】東大卒が蚊よけになるものを調査してみた
![[Science] I came up with a way to cut pizza](https://i.ytimg.com/vi/GOZYJQ_aqTw/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLAyIz_TOwZ3L0toNMbe2FeAJjokrQ)
▶︎
[Science] I came up with a way to cut pizza

▶︎
Casting SALT like Metal - What Happens?

▶︎
初詣の賽銭用5円磨き Seriaの商品だけでピカピカにする方法
![Learn logical photo editing techniques [density conversion/color adjustment]](https://i.ytimg.com/vi/vAeFqXzirtM/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLBjSYS25M5BLRsfrH2sWzv_LgaFQQ)
▶︎
Learn logical photo editing techniques [density conversion/color adjustment]

▶︎
超難問クイズ!一瞬で10円玉をピカピカにする薬品はどれ?【実験】science experiments

▶︎
【自由研究】10円玉磨き 鏡面仕上げ

▶︎
I Hate How E-Bikes Look. So I Built This Instead.

▶︎
An Infinitely Long Sentence Made of Just One Word

▶︎
Experiments That Look FAKE But Are Actually REAL!

▶︎
How IKEA Mastered Furniture

▶︎
映える虚無スイーツを共同開発【ラムダ技術部コラボ】

▶︎
