Group of boys explore wimshurst machine in museum of science
Children explores van de graaff generator
Close-up of diffuser spraying mist into air to kill airborne pathogens in premises. Electrostatic sprayer in gloved male hands during process of disinfection in hotel room amid coronavirus epidemic
Boys and teacher explores wimshurst machine
Colorful dry ink moving on white milk background, top view. Close up for powder paint floating on the surface of white liquid, art concept.
Blockchain technology, bitcoins mining concept with lightnings, macro shot of bitcoins. Cryptocurrency Bitcoin, BTC, power consumption concept
Bitcoins mining concept in green light with lightnings. Blockchain technology, Cryptocurrency Bitcoin, BTC, power consumption concept
Blockchain technology, Bitcoins mining concept in green light with lightning, macro shot of bitcoins. Cryptocurrency Bitcoin, BTC, power consumption concept
Blockchain technology, Bitcoins mining concept with lightning, macro shot of bitcoins. Cryptocurrency Bitcoin, BTC, power consumption concept
Close-up of male hand in glove holding electrostatic sprayer during decontamination of hotel room. Hotel worker with cold fogger machine spraying curtains, furniture, surfaces after guest's departure
Blockchain technology, Bitcoins mining concept with lightning, macro shot of bitcoins. Cryptocurrency Bitcoin, BTC, coins rotates, power consumption concept
Blockchain technology, Bitcoins mining concept in green light with lightning, macro shot of bitcoins. Cryptocurrency Bitcoin, BTC, coins rotates in green light, power consumption concept
Blockchain technology, Bitcoins mining concept in green light with lightning, macro shot of bitcoins. Cryptocurrency Bitcoin, BTC, coins rotates in green light, power consumption concept
