40 websites that will make you cleverer right now. The indexed web contains an incredible 14 billion pages.
But only a tiny fraction help you improve your brain power. Here are 40 of the best. whizzpast.com – Learn about our awe inspiring past all in one wonderful place. khanacademy.org – Watch thousands of micro-lectures on topics ranging from history and medicine to chemistry and computer science. freerice.com – Help end world hunger by correctly answering multiple-choice quizzes on a wide variety of subjects. artofmanliness.com – Blog/site dedicated to all things manly, great for learning life skills and good insights. unplugthetv.com – Randomly selects an educational video for you to watch. coursera.org – An educational site that works with universities to get their courses on the Internet, free for you to use. mentalfloss.com – Interesting articles guaranteed to make you smile and get you thinking. feelgoodwardrobe.com – Find out how the world of fashion really works and what you can do to combat it.
Chemistry Tutorials & Drills. Build an Atom. Warning Label Generator. 100 Free Tools to Tutor Yourself in Anything. Serendip.brynmawr.edu/sci_edu/farber/pdf/metal.pdf. Briggs-Rauscher Oscillating Color Change Reaction. Introduction The Briggs-Rauscher reaction, also known as 'the oscillating clock', is one of the most common demonstrations of a chemical oscillator reaction.
The reaction begins when three colorless solutions are mixed together. The color of the resulting mixture will oscillate between clear, amber, and deep blue for about 3-5 minutes. The solution ends up as a blue-black mixture. Materials Solution A: Add 43 g potassium iodate (KIO3) to ~800 mL distilled water. You will need: 300 mL of each solution 1 L beaker stirring plate magnetic stir bar Procedure Place the stirring bar into the large beaker. Notes This demonstration evolves iodine. Clean Up Neutralize the iodine by reducing it to iodide. The Briggs-Rauscher Reaction This reaction can be broken into two component reactions: This reaction can occur by a radical process which is turned on when I- concentration is low, or by a nonradical process when the I- concentration is high. This reaction also consists of two component reactions: Acid_base. The Scale of the Universe 2.
Mind Mapping, Ideation and Collaboration Industry Solutions. The most watched and most highly-rated TED talks at the moment. How to Extract DNA from Anything Living - StumbleUpon. First, you need to find something that contains DNA.
Since DNA is the blueprint for life, everything living contains DNA. For this experiment, we like to use green split peas. But there are lots of other DNA sources too, such as: Spinach Chicken liver Strawberries Broccoli Certain sources of DNA should not be used, such as: Your family pet, Fido the dog Your little sister's big toe Bugs you caught in the yard Step 1: Blender Insanity! Put in a blender: 1/2 cup of split peas (100ml) 1/8 teaspoon table salt (less than 1ml) 1 cup cold water (200ml) Blend on high for 15 seconds. The blender separates the pea cells from each other, so you now have a really thin pea-cell soup. Step 2: Soapy Peas Pour your thin pea-cell soup through a strainer into another container (like a measuring cup).
Add 2 tablespoons liquid detergent (about 30ml) and swirl to mix. Let the mixture sit for 5-10 minutes. Pour the mixture into test tubes or other small glass containers, each about 1/3 full. Why am I adding detergent? Greatest Hits of TED Videos. ScienceWorld - StumbleUpon. The Naked Scientists Online, Science Podcast and Science Radio Show - StumbleUpon.
Antimatter:Mirror of the Universe - StumbleUpon. Science Experiments - 5min.com. Thorium reactors a silver bullet for our looming energy crisis? Like it or not, the world is facing a looming energy crisis as we continue to burn through the planet’s available fossil fuels at an alarming rate.
A gallon of gasoline that used to cost under a dollar back in the 80′s and early 90′s is now averaging over $4.00, placing financial strain on industry and consumers the world over. Researchers have been working feverishly in the past ten-years to try to find viable alternatives that can produce abundant energy. One such technology that is being looked at closely is liquid fluoride thorium reactors, a “breeder” power source that could provide enough energy to satisfy the world’s consumption indefinitely.
While that may sound like a pipe-dream, science is showing how Thorium could eventually replace fossil-fuels all together in the next twenty-years if the world’s countries would get serious about development. Disasters like Chernobyl and Fukushima have given the public a bad taste in their mouths when it comes to nuclear energy. More at WNYC.