Odvrtanje sijalica, zavrtanje ruku

<img width="1024" height="576" src="https://pescanik.net/wp-content/uploads/2022/05/Foto-Dietmar-Rabich-1024x576.jpg" alt="šećer u kocki" class="wp-image-100607 colorbox-100606" title="Foto: Dietmar Rabich/Wikimedia Commons" srcset="https://pescanik.net/wp-content/uploads/2022/05/Foto-Dietmar-Rabich-1024x576.jpg 1024w, https://pescanik.net/wp-content/uploads/2022/05/Foto-Dietmar-Rabich-300x169.jpg 300w,