You can also play with electromagnets, generators and transformers!

你还可以用电磁石，发电机和变压器！

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Home appliances, meters, transformers and generators could all share data and work together to make the power grid more efficient, for example by lowering the peak load.

ECONOMIST: Reshaping Cisco

They take you inside through a tunnel that smells of ozone and let you look through glass windows at giant, whirring generators while the guide unfurls the mysteries of turbines and transformers for the rapt crowd.

NPR: Excerpt: 'Inventing Niagara'