Abakcus
@abakcus
Abakcus is the best curation site for math and science. Please subscribe my weekly newsletter! It is FREE!
가입 June 2020
285 팔로잉 중 98.5K 팬
Alexander Graham Bell patented the telephone at 29, then spent the next fifty years making kites. His small model flew in an ordinary breeze while the giant version of the same design needed a hurricane to lift it.
더 보기
