1
00:00:04,579 --> 00:00:02,330
so I saw this video on YouTube which

2
00:00:05,930 --> 00:00:04,589
supposedly shows a difference in

3
00:00:08,089 --> 00:00:05,940
temperature of some aluminum foil

4
00:00:12,249 --> 00:00:08,099
depending on whether it is in the shade

5
00:00:14,480 --> 00:00:12,259
or if it's in in the direct moonlight

6
00:00:15,829 --> 00:00:14,490
you see there's a plastic table they're

7
00:00:17,900 --> 00:00:15,839
covering one side and the other side

8
00:00:19,790 --> 00:00:17,910
it's exposed to the moon another plastic

9
00:00:21,380 --> 00:00:19,800
tableside it shows 40 degrees and on the

10
00:00:23,929 --> 00:00:21,390
other side it shows a much lower

11
00:00:26,150 --> 00:00:23,939
temperature but what's actually going on

12
00:00:28,370 --> 00:00:26,160
here is that it's actually the

13
00:00:30,919 --> 00:00:28,380
reflection of the sky or the reflection

14
00:00:33,319 --> 00:00:30,929
or the table here's an experiment that I

15
00:00:36,830 --> 00:00:33,329
did to demonstrate what's actually going

16
00:00:38,330 --> 00:00:36,840
on here and this one's in the Sun so

17
00:00:41,299 --> 00:00:38,340
here's a set up to show the problem with

18
00:00:42,650 --> 00:00:41,309
reflected readings the aluminum foil on

19
00:00:46,340 --> 00:00:42,660
the ground here

20
00:00:48,049 --> 00:00:46,350
is going to be reflecting the radiation

21
00:00:51,619 --> 00:00:48,059
of Rome or whatever is directly behind

22
00:00:55,189 --> 00:00:51,629
it now in this case we've got a cloudy

23
00:00:58,099 --> 00:00:55,199
sky with a bit of Sun and I put this

24
00:01:01,220 --> 00:00:58,109
plastic cooler here to provide some

25
00:01:02,959 --> 00:01:01,230
shade on this side and I put this dark

26
00:01:06,260 --> 00:01:02,969
line they're roughly indicating whether

27
00:01:08,810 --> 00:01:06,270
the shadow line is so this side is in

28
00:01:11,240 --> 00:01:08,820
the shade this side is in the Sun now

29
00:01:13,250 --> 00:01:11,250
it's probably going to warm up because

30
00:01:15,350 --> 00:01:13,260
it's in the Sun this side you can

31
00:01:17,480 --> 00:01:15,360
actually feel it actually feels a little

32
00:01:20,300 --> 00:01:17,490
bit cooler but what's the infrared

33
00:01:23,179 --> 00:01:20,310
actually going to show us so let's let's

34
00:01:26,330 --> 00:01:23,189
flip over to infrared the foil actually

35
00:01:28,580 --> 00:01:26,340
appears to be warmer in front of the

36
00:01:33,410 --> 00:01:28,590
cooler now if I move this down and have

37
00:01:36,410 --> 00:01:33,420
a look this is saying that it's one

38
00:01:37,580 --> 00:01:36,420
degree right here this foil which is

39
00:01:40,960 --> 00:01:37,590
obviously isn't it's actually a lot

40
00:01:44,389 --> 00:01:40,970
warmer and over in the shade over here

41
00:01:45,950 --> 00:01:44,399
70 degrees so what's actually going on

42
00:01:48,920 --> 00:01:45,960
here it's actually measuring the

43
00:01:52,520 --> 00:01:48,930
reflection of the heat of the cooler

44
00:01:57,010 --> 00:01:52,530
here 70-something degrees we go down to

45
00:02:00,020 --> 00:01:57,020
here 70 something degrees go over here

46
00:02:02,389 --> 00:02:00,030
10 degrees so what we're actually seeing

47
00:02:03,319 --> 00:02:02,399
here on this side is the temperature of

48
00:02:07,100 --> 00:02:03,329
the sky

49
00:02:10,540 --> 00:02:07,110
maybe I pan out and have a look as the

50
00:02:13,540 --> 00:02:10,550
trees and Sun there's some blue sky

51
00:02:16,780 --> 00:02:13,550
it's negative 40 degrees Fahrenheit if I

52
00:02:18,340 --> 00:02:16,790
move over to the clouds there at 39

53
00:02:21,610 --> 00:02:18,350
degrees which is a more reasonable one

54
00:02:25,900 --> 00:02:21,620
let's see if I can get the Sun if you're

55
00:02:27,700 --> 00:02:25,910
gonna do something ridiculous yeah it

56
00:02:30,250 --> 00:02:27,710
doesn't realize not really calibrated

57
00:02:33,280 --> 00:02:30,260
for measuring the Sun predictor here

58
00:02:35,710 --> 00:02:33,290
this is a overloaded temperature above

59
00:02:37,780 --> 00:02:35,720
two hundred and something degrees so I

60
00:02:40,810 --> 00:02:37,790
could probably find some hot spots on

61
00:02:43,240 --> 00:02:40,820
this side and the other thing you can do

62
00:02:45,400 --> 00:02:43,250
is if I move around I'm still in the

63
00:02:49,330 --> 00:02:45,410
shade here but if I get it so I'm

64
00:02:52,390 --> 00:02:49,340
reflecting the sky in the shade should

65
00:02:54,850 --> 00:02:52,400
be a find a spot where it is about four

66
00:02:59,980 --> 00:02:54,860
degrees and I can't actually good at my

67
00:03:02,230 --> 00:02:59,990
angle let me get from this side here we

68
00:03:06,070 --> 00:03:02,240
go they're measuring in the shade again

69
00:03:10,990 --> 00:03:06,080
it's very low zero degrees Fahrenheit

70
00:03:14,590 --> 00:03:11,000
and that's actually in the Sun Shade in

71
00:03:18,610 --> 00:03:14,600
mind the moon shape so you get the exact

72
00:03:19,630 --> 00:03:18,620
same results as you would in and what in

73
00:03:22,330 --> 00:03:19,640
the moon you wouldn't get any

74
00:03:25,060 --> 00:03:22,340
temperature difference okay look at this

75
00:03:28,480 --> 00:03:25,070
bit of concrete right next where this

76
00:03:31,930 --> 00:03:28,490
was this has been shaded so that's 69

77
00:03:34,750 --> 00:03:31,940
degrees and whereas in the Sun 75

78
00:03:37,360 --> 00:03:34,760
degrees so the shading has a little fat

79
00:03:39,160 --> 00:03:37,370
from the Sun on the concrete but on this

80
00:03:40,660 --> 00:03:39,170
aluminum foil is completely useless

81
00:03:43,090 --> 00:03:40,670
because you can't actually measure the

82
00:03:45,290 --> 00:03:43,100
temperature of the aluminum foil here is