## TED-Ed’s Interactive Periodic Table

TED-Ed has recently created an interactive Periodic Table where you can view videos about every element. This project was a collaboration of TED-Ed and Brady Haran of Numberphile. Once you click the video, you can view experiments as well as explanations from experts and teachers about the element.

This is a must view for students taking Chemistry as well as Chemistry teachers.

The video below explains about Hydrogen.

## Einstein’s Documents now Online at Digital Einstein

Starting today, you can now access some of the many papers left by Albert Einstein at  an open access website for the collected papers of the man himself. This website publishes papers from the Einstein Papers Project edited by Diana Kormos-Buchwald, a professor of Physics and the history of science at the California Institute of Technology.

Albert Einstein (via Wikipedia)

Currently, the website contains about 7,000 pages of 2,900 unique papers (13 volumes, also published already in print) written in the original language and with English annotations. The documents include his scientific papers as well as his personal life such as letters, postcards, notebooks, and even diaries.

According to the website, Project Einstein is planning to present subsequent volumes two years after publishing the books.

H/T: NY Times

## Solving the Merry Christmas Equation

It’s December again and many people are celebrating Christmas. Here in Japan, Christmas is also celebrated even though only less than 1% of the population are Christians.

Anyway, I will be very busy this month, but let’s start our month with solving an equation that will lead to Merry Christmas. Sound confusing? Let’s start.

To understand the solution below, it would help if you have some prior knowledge of about natural logarithms.

The Christmas Equation

Let’s solve the equation $y = \displaystyle \frac{ \ln (\frac{x}{m} - sa)}{r^2}$