Science and education (48)

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