Memo: Thermodynamic processes

When investigating thermodynamic systems, especially gaseous systems, scientists often keep one of the three variables (pressure, volume, temperature) at constant and vary the remaining two. The act of fixating one variable and changing the others gives rise to thermodynamic, conjugate variable processes: Isobaric: constant pressure. Isothermal: constant temperature. Isometric / Isochoric / Isovolumetric: constant volume.… Continue reading Memo: Thermodynamic processes


Memo: Chemical bonding models

Beyond the level of individual atoms, atomic theory also concerns itself with the mechanism of molecular bonding and the geometry of molecules. There are three relevant chemical bonding models nowadays: Valence shell electron pair repulsion theory (VSEPR): the simplest, most primitive model based on electron field repulsions and Lewis structure. Valence bond theory (VB): a modern… Continue reading Memo: Chemical bonding models

Memo: Atomic models

Atoms are composed of subatomic particles whose quantity and arrangement affect their properties. The scientific theory correlating subatomic particles' quantity, their arrangement in an atom, and the atom's properties is called "atomic theory". Atomic theory attempts to explain how certain electron configurations affect the reactivity of elements, how certain elements are polarized while others aren't,… Continue reading Memo: Atomic models

Memo: Thermodynamics in Chemistry

All energy transferences are done in two ways: by heat or by work. In any given system and any given process, the total energy transferred is the sum of the heat transferred and the amount of work transferred. This says nothing about the ratio of work and heat in the total energy, or why energy can only… Continue reading Memo: Thermodynamics in Chemistry

Memo: Gas laws

Historically, the proportionalities of temperature, volume, and pressure of an ideal gas are described in pair empirically by Boyle's law (pressure-volume), Charles' law (temperature-volume), and Gay-Lussac's law (pressure-temperature). These early gas laws; along with Avogadro's law, which links the study of gas in Physics to the number of molecules in Chemistry; are combined to form the modern ideal… Continue reading Memo: Gas laws

Short story: Valentine special

The boy took long strides through a narrow passageway behind the university's building. He climbed a heap of unused tables onto the roof of a storage sack. From there, he made a dash and leaped over the fence. He landed on all four, rolled on the ground a few times before slamming his back against… Continue reading Short story: Valentine special

Memo: Chemical equilibrium

Some chemical reactions are reversible. The ingredients, or reactants, interact to create products in the forward reaction while the products (ions, chemical compounds, and thermal difference) interact with one another to recreate the reactants in the backward reaction. These reactions are technically neverending although, in practice, the chemical reaction is considered completed when these two opposite processes… Continue reading Memo: Chemical equilibrium

Highlight: Fall 2017 anime season

Despite the hypes around Mahoutsukai no Yome, the show ultimately falls short. It did great in world building, audio-visual quality, and character development. However, it lacks suspension; it lacks a dilemma to overcome, an antagonist to defeat, or a MacGuffin to desire. The only villain appeared in the show thus far has been as flat as… Continue reading Highlight: Fall 2017 anime season

DIY Memo: ESP8266 v12 analog I/O

This is an amendment to the previous ESP8266v7 memo. More specifically, the I/O pins don't behave exactly as described by internet sources. A little bit of background: I was presented with a challenge to read from an analog sensor and send the reading through wifi network to the cloud. This can be accomplished easily using… Continue reading DIY Memo: ESP8266 v12 analog I/O