Items of Interest

Bloom Filters

Onat Yigit Mercan posted a great explainer on Bloom filters, a data structure used as a sort of fuzzy hash map for membership of collections. The filters can be used to query if items are in a large database without using large amounts of memory. For example, a database of 1 million entries can use a bloom filter of just 1.14MB.

Lockpicking With Sound

Researchers at the National Unviersity of Singapore have developed a system called SpiKey that can predict 10 possible options of a key design just by recording the sound of a key in a lock. Of the 586,584 possible key combinations for a 6-pin lock, SpiKey can be used on approx. 56% of them to generate candidate key options that will open the lock.

NeRF

Neural Radiance Fields For Unconstrained Photo Collections (NeRF) is a neural network project from researchers at Google that can take in a set of pictures of a place from the internet and automatically generate a representation of the scene that can be explored in 3D. The lighting and environmental effects of the scene can also be manipulated at a realistic level.

Power Bricks

Researchers at Washington University in St. Louis have developed a method to turn mason bricks into batteries. By soaking the bricks in a PEDOT conductive polymer, the bricks become capable of storing and conducting energy. One brick can be charged to 3 Volts in 10 seconds and then power a LED light for 10 minutes!

Pages

Life Changing Smart Thinking Books