Explore the universe in your microwave. Measure the speed of light with chocolate. The wavelength of light creates hot spots in the microwave that you can measure to show the speed of light. Chocolate has never been so useful.
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.