Beyond the Edges of the Universe

By Palak Porwal In our everyday lives, we have often heard that the ‘universe is expanding’. But have we ever thought about what is the universe expanding into or where exactly is it expanding? Even if we acquire far better telescopes than we use today it will be challenging to explore the edges of our observable universe, because we are limited to information brought to us by light travelling from far off distances. Many physicist […]

Comprehensive Review of Exchange-Correlation Functional Methods

Ashwin Inala NCSSM Online North Carolina School of Science and Mathematics Durham, North Carolina February 25, 2017 Abstract: Density functional theory is a computational technique of using elec- tron density, not wavefunction, to predict properties of molecular systems. Over the years, many scientists, such as Pierre Hohenberg, Erwin Schrodinger, and Walter Kohn, have contributed to the fast growth of density functional theory. To find the energy of system, scientists must approximate the exchange-correlation functional. The […]

Spring Bling

Spring Bling displays multiple physics related concepts: surface tension, refraction, density, and color. Surface tension is the attraction of molecules to one another on a liquid’s surface. In Spring Bling, underneath the surface of the water all of the molecules have equal pressure pushing on them from all sides. The water molecules on the surface, however, do not have molecules above them pushing down, so they are more strongly attracted to their neighbors. This attraction […]

The SMART New Thermostat

 SMART: (Simple Manageable Adaptive Residencial Thermostat)  SECTION 1. ABSTRACT This paper presents an invention related to programmable adaptive thermostat which provides effective energy conservation on air conditioner and heater. The price of residential electricity is soaring.   Electric bills have skyrocketed in the last several years.  US Department of Energy indicated that the price of one kilowatt-hour of electricity (in nominal dollars) has increased about five times from $ 0.08/kWh in 1996 to $0.39/kWh in 2034.  Southern California Edison announced […]