Toggle light / dark theme

How core-mantle differentiation influenced the distribution of volatile elements on Earth. Imagine Earth’s history as a mystery novel, with one of its greatest unresolved questions being: Where did all the nitrogen go? Scientists have long observed that Earth’s rocky outer layer, the mantle, cont

An animated introduction to the Fourier Transform.
Help fund future projects: https://www.patreon.com/3blue1brown.
An equally valuable form of support is to simply share some of the videos.
Special thanks to these supporters: http://3b1b.co/fourier-thanks.
Learn more about Janestreet: https://janestreet.com/3b1b.

Follow-on video about the uncertainty principle: https://youtu.be/MBnnXbOM5S4

Interactive made by a viewer inspired by this video:
https://prajwalsouza.github.io/Experiments/Fourier-Transform-Visualization.html.

Also, take a look at this Jupyter notebook implementing this idea in a way you can play with:
https://github.com/thatSaneKid/fourier/blob/master/Fourier%2…tion.ipynb.

Thanks to these viewers for their contributions to translations.
Hebrew: Omer Tuchfeld.
Russian: xX-Masik-Xx.
Vietnamese: @ngvutuan2811

—————–

Indiana University School of Medicine scientists have developed a powerful new imaging technique to study bone marrow in mouse models. By overcoming key challenges unique to imaging this complex tissue, this advancement could support future drug development and therapies for conditions involving bone marrow, including cancers, autoimmune diseases and musculoskeletal disorders.

The new method was made possible by the multiplex imaging tool Phenocycler 2.0, which enabled researchers to visualize a record number of cellular markers within intact tissue from mice. The findings are published in Leukemia.

“Bone marrow is difficult to study because it is gelatinous and encased in hard bone,” said Sonali Karnik, Ph.D., assistant research professor of orthopedic surgery at the IU School of Medicine and co-lead author of the study. “Since bone marrow plays an important role in blood and immune cell formation and houses valuable stem cells, our unique imaging approach offers a useful tool for a variety of research applications.”