7A19 Tiết 19 - Bài 12.1: Ánh sáng truyền đi như thế nào? by Nguyễn Thị Thu Hằng https://padlet.com/vhangntt111/630p2nifwveinp8c Lấy ví dụ cho mỗi trường hợp được liệt kê. en-us 2022-01-06 05:45:04 UTC 2025-11-06 14:03:58 UTC hello@padlet.com VD Nguồn sáng vhangntt111 https://padlet.com/vhangntt111/630p2nifwveinp8c/wish/1977995065 2022-01-06 05:45:04 UTC https://padlet.com/vhangntt111/630p2nifwveinp8c/wish/1977995065 VD Vật Phát quang vhangntt111 https://padlet.com/vhangntt111/630p2nifwveinp8c/wish/1977995066 2022-01-06 05:45:04 UTC https://padlet.com/vhangntt111/630p2nifwveinp8c/wish/1977995066 VD Vật không phát quang vhangntt111 https://padlet.com/vhangntt111/630p2nifwveinp8c/wish/1977995067 2022-01-06 05:45:04 UTC https://padlet.com/vhangntt111/630p2nifwveinp8c/wish/1977995067 Mặt Trăng là vật phát quang hay không phát quang? Vì sao? vhangntt111 https://padlet.com/vhangntt111/630p2nifwveinp8c/wish/1977995068 2022-01-06 05:45:04 UTC https://padlet.com/vhangntt111/630p2nifwveinp8c/wish/1977995068