Acoustic Metamaterial

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Flipkart resumes operations; Amazon says in talks with govt to enable delivery of essential items
Business

Flipkart resumes operations; Amazon says in talks with govt to enable delivery of essential items

Flipkart, along with rival Amazon India's Pantry service, were suspended temporarily on Wednesday morning as India entered into a 21-day lockdown to contain the spread of Covid-19 pandemic.

3D printed noise barrier blocks 94% of all sound passing through an open tube
science

3D printed noise barrier blocks 94% of all sound passing through an open tube

The researchers have big ideas about how the material could work to make the real world quieter.