1.1M views · 3.3K reactions | Look inside a lab! Today, we’re walking into an anechoic chamber that’s part of the National Broadband Interoperability Test Bed. In this chamber, NIST researchers can test wireless systems – cellular phones, WiFi, radar, GPS and more – in a closed environment where radio signals cannot enter or leave. | National Institute of Standards and Technology (NIST) | Facebook

18K views · 67 reactions | Choking can happen very quickly. To avoid making mistakes like these, check out Baby Center Courses for more advice: https://courses.babycenter.com/ | BabyCenter | Facebook