Engineering

Engineering, 22.07.2021 05:10, BreBreDoeCCx

Một vách phẳng được làm bằng hai tấm kim loại đặt song song có diện tích 10m2
. Khoảng cách giữa hai tấm được xem là rất nhỏ so với diện
tích mỗi tấm. Độ đen của tấm thứ nhất là 1 = 0,8; Nhiệt độ và độ đen của tấm thứ hai
là t2 = 210oC, 2 = 0,9. Giữa 2 tấm được đặt một màn chắn có độ đen lần lượt bằng m1
= 0,1. Nhiệt độ tấm thứ 2 là 110oC. Tính khả năng bức xạ của màn chắn.

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Một vách phẳng được làm bằng hai tấm kim loại đặt song song có diện tích 10m2
. Khoảng cách g...

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