• Mathematics

    The book of nature is written in the language of Mathematic. -Galileo

  • Physics

    We live in a universe that responds to what we believe. -Corbin Henry

  • Chemistry

    We define organic chemistry as the chemistry of carbon compounds. -August Kekule

  • Astronomy

    The universe is like a safe to which there is a combination, but the combination is locked up in the safe. –Peter de Vries

  • Engineering

    There’s nothing I believe in more strongly than getting young people interested in science and engineering, for a better tomorrow, for all humankind. -Bill Nye

10 Rules for a Rich Life

1. A rich life means you can spend extravagantly on the things you love as long as you cut costs mercilessly on the thing you don't 2. Focus on the Big Wins-the five to ten things that get you disproportionate results, including automating your saving and investing, finding a job you love, and negotiating your salary. Get the Big Wins right and you can order as many lattes as you want. 3. Investing...

High School AP Chemistry

Introduction And Philosophy Basic Concepts Of Quantitative Reasoning Quantitative Reasoning In Everyday Life Quantitative Reasoning In Chemistry—density The Si (Metric) System Of Measurement Converting Between Systems Of Measurement Elements, Atoms, And The Periodic Table Ions, Compounds, And...

Free Science Magazine Subscription

The Scientist is a website that offer free information about Biology and life science. They offer free magazine to subscriber. You can sign up to receive two type of magazine, the digital which is sent directly to your email or you can sign up to get the printed copy sent to your address. I used...

Finviz - Free Stock Screener

With this stock screener you can screen stock using a wide variety of fundamental, technical, and descriptive metrics. The screener will also provide charts, quotes, and other useful information once you've drilled down and come up with results that are worth further exploration. I use this to search...

What is the difference between debt and equity funding

A bank these days can lend up to 80% of the total cost of the project (land + permits + construction + sales). This means in order to make a project possible a developer only needs to come up with 20% of the money required themselves, with the rest being borrowed. A good project needs to deliver...

Understanding Basic Electronics

DC Voltage AC Voltage Semiconduct...

Understanding Modern Electronics

Electricity and Electronics Circuits and Symbols Instruments and Measurement AC versus DC Up The Treble Down the Bass Semiconductors - The Miracle Material Transistors and How They Work Transistors As Amplifiers Building An Audio Amplifier The Ideal Amplifier Feedback Magic Electronic...

Biology - Science of Life

1. The Scope of Life 2. More on the Origin of Life 3. The Organism and the Cell 4. Proteins-How Things Get Done in the Cell 5. Which Molecule Holds the Code 6. The Double Helix 7. The Nuts and Bolts of Replicating DNA 8. The Central Dogma 9. The Genetic Code 10. From DNA to RNA 11. From...

How Tax Works

Taxation is the main way in which governments raise revenue needed to pay for public spending. Governments may tax the public directly (for instance, through income tax) or indirectly (via VAT for example).  How it works Governments have the unique privilege of being able to demand that anyone...

Governments and money

A country's government and central bank play a key role in the circulation of money in the economy. They monitor money supply, send funding to key sectors of society, and ensure that cash flows back to them for state spending. How it works A healthy economy requires a good money supply. Although...

Understanding Shares

Shares are units of ownership interest in a corporation that are available for investors to buy or sell. Companies create shares in order to raise capital, which they can invest to grow their business. How It Works Shareholders are investors who buy the shares a company creates, and who therefore...