Science and education (48)

Speaking out loud Good idea  Dark, puffy clouds in the sky. Weather phenomenon Light bulb graphics set Man pondering the problem Business scream The man during the lecture Good idea Photo of a soccer goal on green grass. Soccer goal net. Autumn park. Swings in the autumn park. Football gate. Soccer goal net.  Artistic reproduction of the Cloth Hall on the Market Square in Cracow Photo of the clouds. Dark puffy clouds in the sky. Traffic cone Photo of the swings. Swings for children in the park. Photo of the wind propeller Wind turbine against the sky Photo of a metalworking machine. Metallurgical plant. Ecological energy sources obtained from windmills Photo of a windmill's blades in the sky Photo of the wind propeller  Photo of fallen leaves. Falling leaves. Model of the Cloth Hall in Cracow. Photo of a mock-up reflecting the building of the Cracow Cloth Hall. Vise close up. Vice in the old forge. Photo of an old antique cannon. Close-up of lying autumn leaves. Leaves fell off the tree.  Colorful leaves in the forest. Photo of yellow leaves. The leaves that have fallen from the tree. Colorful leaves in the forest.  A cannon standing outside the city walls. A large cannon standing in front of the city walls. Photo of the vise. Rusty vice.  A large cannon standing in front of the city walls.  Photo of autumn leaves under a tree. Deciduous tree leaves. Photo of a cobweb covering old tools. Old things. Forest landscape. The leaves that have fallen from the tree. Photo of colorful soap bubbles. Soap bubbles. TV tower in Dresden. Shiny soap bubbles. Floating soap bubbles. Dark clouds in a gray, gloomy sky. Gray textured storm clouds of bad weather. Cloudy sky. Dark, rainy clouds in the sky. Dark, rainy clouds in the sky.  Clouds against the sky. Dark, rainy clouds in the sky. Cloudy sky. Cloudy sky. Dark clouds in a gray, gloomy sky. Dark clouds before the rain. Cloudy sky. Puffy clouds. Clouds in the blue sky.  Clouds against the sky. Photo of clouds. Gray textured bad weather storm clouds. Dark clouds before the rain. Dark clouds in the sky. Clouds against the sky. Photo of clouds.  Dark clouds in a gray, gloomy sky