So how does a fan without blades work? The magic is in the ring structure, where the air flows out a slit around the front edge of the ring. Here a process called inducement is put to work. The air flowing out of the slit recruits surrounding air because of the configuration of the slit. So now there is more air flowing through the ring structure than there would be from the base fan alone. Dyson claims that inducement creates a 15x amplification in airflow. The energy-efficient motor draws in more than 5 gallons of air per second. Air Multiplier is safe around kids and pets, and it’s easy to clean too. Measures 21.5 x 14 x 6 inches with 12-inch loop.

Buy it: Dyson Air Multiplier Table Fan - Fan Without Blades