Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
주름상자는 빛의 경로를 조절하여 이미지를 형성합니다.jureum sangjaneun bichi gyeongroreul jojeolhayeo imijereul hyeongseonghamnida.The camera obscura controls the path of light to form an image.