An Interactive Guide to the Fourier Transform - https://news.ycombinator.com/item?id=10635075 - Nov 2015 (18 comments)
An Interactive Guide To The Fourier Transform - https://news.ycombinator.com/item?id=4948082 - Dec 2012 (25 comments)
These are similar:
An Interactive Introduction to Fourier Transforms - https://news.ycombinator.com/item?id=25095724 - Nov 2020 (52 comments)
An Interactive Introduction to Fourier Transforms - https://news.ycombinator.com/item?id=20934347 - Sept 2019 (44 comments)
An Interactive Introduction to Fourier Transforms - https://news.ycombinator.com/item?id=18879957 - Jan 2019 (22 comments)
An animated introduction to the Fourier Transform [video] - https://news.ycombinator.com/item?id=16242103 - Jan 2018 (31 comments)
Ask HN: Where can I learn about fourier transformations? - https://news.ycombinator.com/item?id=15819069 - Nov 2017 (8 comments)
Fourier transform – A math tool used in optics, MP3s, JPEGs and more (2013) - https://news.ycombinator.com/item?id=14084526 - April 2017 (83 comments)
The Fourier Transform and its Applications - https://news.ycombinator.com/item?id=12476692 - Sept 2016 (55 comments)
The Medieval Fourier Transform - https://news.ycombinator.com/item?id=10531790 - Nov 2015 (15 comments)
The Fourier Transform, explained in one sentence - https://news.ycombinator.com/item?id=8505410 - Oct 2014 (82 comments)
The Fourier Transform and its Applications - https://news.ycombinator.com/item?id=7789767 - May 2014 (22 comments)
Fourier transform for dummies - https://news.ycombinator.com/item?id=7468193 - March 2014 (37 comments)
Understanding the Fourier transform (2011) - https://news.ycombinator.com/item?id=6686456 - Nov 2013 (6 comments)
Understanding The Fourier Transform - https://news.ycombinator.com/item?id=4861960 - Dec 2012 (44 comments)
Intuitive explication of Fourier Transformation - https://news.ycombinator.com/item?id=2555562 - May 2011 (33 comments)
Mastering The Fourier Transform in One Day - https://news.ycombinator.com/item?id=1360405 - May 2010 (11 comments)
Mastering The Fourier Transform in One Day - https://news.ycombinator.com/item?id=698929 - July 2009 (18 comments)
An Intuitive Explanation of Fourier Theory - https://news.ycombinator.com/item?id=56844 - Sept 2007 (11 comments)