# Science Night Live

**Science Night Live** public lectures offer a casual social and educational event in downtown Salt Lake.
All events are held at **Keys on Main** (242 South Main Street), beginning with a social at 5:30 and a lecture at 6:00 p.m.
Free and open to the public! **Must be 21 years of age or older**. Right across the street from the Gallivan TRAX station.

# Next Lecture:

## Wednesday, **February 1, 2017 **

### Title: **The Spin Behind Modern Electronics **

**Featuring: Professor Christoph Boehme – Physics & Astronomy**

For more than half a century, the development of new and better semiconductor materials has driven the continuous innovation in electronic devices like computers and cell phones. “Better semiconductors” are materials with fewer impurities (“nanodirt”), missing atoms, or defects (“nanocracks”) which slow down or even destroy electric current, limiting performance.

The way defects affect materials frequently involves a property of electrons that physicists call “spin”. Spin makes electrons act like tiny magnets with a north and a south pole. This talk is about using spin and magnetism to find out which culprits make an electronic material worse, how exactly they do this, and how to fix this.

## Wednesday, **April 5, 2017 **

### Title: **Symmetry And The Primes**

**Featuring: Assistant Professor Stefan Patrikis – Mathematics**

First we learn to count; next we learn to multiply. From the interaction of these two elementary operations emerge the prime numbers, the building blocks of the integers.

The patterning of the primes continually reveals itself to be richer than mathematicians could ever have expected. A well-placed application of 18th century number theory exploits the richness of this patterning to build the public-key cryptography algorithms that secure many of our electronic communications. Number theory in the 21st century, while still grounded in the study of the primes, takes form through surprising connections with geometry, topology, algebra, and analysis, and even suggests bizarre and tantalizing analogies with fundamental physics.

These astonishing connections express previously hidden symmetries in the prime numbers, which we are only in the very first stages of understanding. In this talk we will explore how elementary questions of arithmetic lead us to this strange mathematical landscape.