Wyatt White, left, 11, of China, and Ryan Violette, 10, of Action, observe a fire they started Sunday with magnifying glasses during a physics display at the annual 4-H Days at the Windsor Fairgrounds. Nearly 500 people attended the annual agricultural gathering held from Thursday until Sunday to exhibit animals, attend workshops and burn a few pieces of a paper. The Mainely Physics Road Show, with the University of Maine, taught children at 4-H Days about electric currents and gravity while closely monitoring boys refracting light with magnifying glasses.

Only subscribers are eligible to post comments. Please subscribe or to participate in the conversation. Here’s why.

Use the form below to reset your password. When you've submitted your account email, we will send an email with a reset code.