![](https://4.bp.blogspot.com/-3TT0kSnQWT8/XKx58iZihtI/AAAAAAALPPo/-Tz87dsiFzw3DUVCJ1z3dbUkt6IAGsMKwCLcBGAs/s1600/1.png)
빛의 색깔별 온도 실험을 하는 아조시
![](https://4.bp.blogspot.com/-ybaHGV2izuQ/XKx58l1OKSI/AAAAAAALPPk/oGSTHkdUwF0QGsTkapwgaJGMezR7AfQpwCLcBGAs/s1600/2.png)
왼쪽부터 빛없음, 붉은 빛, 푸른 빛
![](https://4.bp.blogspot.com/-S3U1U61lEGs/XKx58qUK9XI/AAAAAAALPPs/7ep-_0rE-cwot8VDwV30H2JptxxEPDBlQCLcBGAs/s1600/3.png)
음.. 초기 온도는 다 52도구만...
![](https://4.bp.blogspot.com/-a0SlVLw2yq4/XKx5988AteI/AAAAAAALPPw/w4PZ0NBEiO4zdXQF59PDQo890IeW8QdzgCLcBGAs/s1600/4.png)
잠시 후..
![](https://4.bp.blogspot.com/-a5QmhGab3sI/XKx5-UH1nVI/AAAAAAALPP4/SJDHcr30yfYEZIExMViMm5qZf80FiH47ACLcBGAs/s1600/5.png)
음.. 온도를 함 재볼까..?
![](https://2.bp.blogspot.com/-rDKdOJsH2ck/XKx5-iyLSLI/AAAAAAALPP8/1LWtNB1GP00kQfTtmRaRZPr4sGpC0EY3QCLcBGAs/s1600/6.png)
푸른 빛52도, 붉은 빛 56도, 그리고....
![](https://2.bp.blogspot.com/-l6LRm2oYvxQ/XKx5_IQpStI/AAAAAAALPQA/FFOO6N52qiIJ-OhlOxScA528qooDcozbgCLcBGAs/s1600/7.png)
59도..?!
온도계가 고장난건가...?
![](https://3.bp.blogspot.com/-jZuOw6i2_aE/XKx6APGha7I/AAAAAAALPQE/GurWQz-RxwEXpuvV9etRDsMiF3HVFFXlQCLcBGAs/s1600/8.png)
아니야! 온도계가 고장나지 않았어!!
눈에는 보이지 않는 빛이 존재하는거야...!
![](https://4.bp.blogspot.com/-rJo8gR7h5as/XKx6Ainh9eI/AAAAAAALPQI/jwkVqmmL8YY_sxMnmYzvweKEVphnW3q5ACLcBGAs/s1600/9.jpeg)
윌리엄 허셜
다들 온도계가 고장났다고 생각했을 때
온도계는 정상이고 보이지않는 빛이 존재할거라고 생각
적외선과 자외선을 발견