Glittering and sparkling light reflections: The pictures of the week
A fascinating effect in photography: reflections, shadow images and soap bubbles in the bokeh. We present such photos in this ...
BBC3 年
Bubble geometry experiment to try with your child
A soap bubble is simply a very thin sheet of soapy water, called a soap film, surrounding a volume of air. A force called surface tension pulls the soap film tight, so that it always has the ...