Learning & Behavior - The ability to visually recognize objects despite differences in orientation would be advantageous for fish because they see objects from many viewpoints as they navigate...

objectconstancy: > turtlesandfrogs: > >> runcibility: >> >>> musingsofaraven: >>> >>>> thehappysnail: >>>> >>>>> ip2lb: >>>>> >>>>>> x >>>>> >>>>> Holy fuck >>>> >>>> This works best if you keep windows closed. >>>> >>>> Another design is using 2 20x25x1 filters, taping them to the sides of the box fan and then to each other so they sort of make a triangle, then cutting cardboard to make a top and bottom to the triangle. >>>> >>>> This was discovered as a more effective design during the 2020 US west coast fires. >>>> >>>> https://tombuildsstuff.blogspot.com/2013/06/better-box-fan-air-purifier.html >>>> >>>> Better Box Fan Air Purifier >>> >>> If you live on the west coast of the United States, fire season is coming and this is vital. >> >> We’ve been using one, and they’re great. Might try to make the double filter version this year. > > theyve been doing a bunch of studies on this during the pandemic and this design is best! 4 filters and a shroud to optimize flow rate. > > Corsi-Rosenthal Cube > > https://encycla.com/Corsi-Rosenthal_Cube