Participants:
Series Code: CIS
Program Code: CIS200014S
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00:01 The experiments you will see
00:02 have been carefully done by professionals, 00:04 and should not be tried at home without parental guidance. 00:06 Please follow the caution signs throughout this program. 00:32 Welcome, kids, we are so glad you could join us today. 00:36 We are going to learn some wonderful things 00:38 about our Creator. 00:39 And I'm excited to have Professor Roy with us, 00:42 Sebastian, Hannah, 00:45 Ethan and Iannah. 00:46 Are you ready? Yes. 00:48 I'm wondering what are we doing right now? 00:51 Well, I think we're going to talk about lenses, maybe? 00:54 Ooh! 00:57 Like these kind. Yeah. 00:59 You can have glass lenses, eye lenses contact. 01:02 You have contacts, right? 01:04 I do, I have contacts. Right. 01:06 So why do we need lenses for anyways? 01:09 What do they help us do? See. 01:11 See better? Yeah, see better, don't they? 01:12 They help us to focus. Okay? 01:14 They help us to focus 01:15 and they're all different sizes, aren't they? 01:17 Yeah. 01:18 We have all different sizes lenses 01:19 and they all have a purpose. 01:21 Well, today what we're gonna do outside is 01:23 we're actually going to use water as a lens. 01:26 Isn't that interesting? Yeah. 01:28 Yeah, but you know, could you hold a water lens in your hand? 01:30 No. 01:32 Well, it would be a little awkward, wouldn't it? 01:33 Okay. 01:34 It'd be like holding a glass of water still 01:36 and you'd trying to read something through it, 01:37 but we've got something outside that makes a water lens. 01:40 And what we're going to do is 01:42 we're going to try to start a fire with water. 01:44 Are you getting that? No. 01:47 Can you do that? 01:48 You can, you can start fire with water. 01:50 In fact, if we had more time, 01:51 you know, we could start a fire with ice. 01:54 Now, ice is colder than fire, isn't that? 01:57 Yes. 01:58 But you can start a fire with ice, 01:59 but we're going to, 02:01 we can do this just by using lenses. 02:03 So we're going to use water for a lens, 02:04 and we're also going to use some lenses 02:07 that are very, very interesting lenses. 02:09 And we're going to look at ourselves 02:10 through different types of lenses. 02:12 Will that be fun? Yeah. 02:13 That would be. Are you guys ready? 02:15 Yes. Let's go. 02:17 Let's get on now. 02:21 I can't wait. 02:23 What do you have for us, Professor Roy? 02:24 Well, we are going to talk about lenses. 02:27 So does anybody wear glasses like me? 02:29 Because I have to wear glasses if I want to read. 02:32 Okay? Nobody wears glasses? 02:33 I have contacts on. You have contacts? Okay. 02:36 I do, I have contacts. 02:37 Do you have lenses? 02:39 Do you have any lenses? 02:40 Do you have any lenses? 02:41 You know, everybody has lens. 02:43 Where are your lenses? In your eyes? 02:44 In our eyes, that's right. 02:46 Our eyes have lenses in them, right? 02:48 And that's how we focus, right? 02:50 And if we're... If we're near-sighted, 02:52 that means we can see things up close, right? 02:55 And if we're farsighted, then we can see things, 02:57 you know, further away. 02:58 That's cool, isn't it? I think so. 03:00 But our eyes can adjust for close in and further away. 03:03 What I have right here. 03:05 So I've got some of these right here. 03:06 Hey, check that out. 03:07 Here check one of those out. Look at this one right here. 03:09 Check that one out. That's interesting. isn't it? 03:11 And you can look at this one right here. 03:13 You know, all of these are what? 03:14 What are these called? Magnifying glass. 03:16 Magnifying glasses or lenses, right? 03:19 Cool. 03:20 Now these right here, 03:21 if you put your fingers on this right here, 03:23 it's kind of rounded, right? 03:24 It goes like it's shaped. It's shaped like this. 03:26 It goes like this and it bulges in the center. 03:28 And then it goes thinner to the side. 03:30 Can you feel that? 03:31 And so that it makes a lens, but you know what? 03:33 The one that you have right here, 03:34 does it bulge? 03:36 No. 03:37 No, now pick this one up. 03:38 Pick this flat one up. You pick this flat one up. 03:40 Okay? There you go. 03:41 She's got one. Okay. 03:43 I can have one too? Yeah. 03:44 Does that bulge? No. 03:45 No, it doesn't bulge, it's flat. 03:47 Can you imagine that? 03:48 So what they've done is they made a magnifying lens 03:51 that is flat and that's pretty cool 03:53 because you know what? 03:55 This would be kind of tough. 03:56 This would take up more room in your pocket 03:57 or your purse, wouldn't it? 03:59 Yeah. 04:00 But this would be, you could put this in a book 04:01 and you wouldn't even break it 04:03 because these are flexible in there, 04:04 but don't bend them, we don't them to break. 04:06 That's interesting. 04:08 Now, what I wanted you to think about was this. 04:11 Now, you've got this lens right here. 04:13 Now, there's two sides, right? 04:14 One side is flat and it's very, very flat 04:17 and there's no little grooves in it, 04:19 but if you turn it over, 04:21 now feel that one, feel that one. 04:24 Feel it, Aunt Francine? Yeah, I felt that. 04:26 So, there's groves in there. You know what? 04:28 Those groves are very important. 04:30 Without those grooves in these lenses, 04:32 it wouldn't work. 04:33 It would be just like a flat piece of some plastic. 04:36 Okay? And that couldn't help us see at all, could it? 04:38 Be like a window. 04:40 But each one of those grooves, 04:41 if you look at it very, very carefully, 04:43 each one of those grooves is cut at a different angle. 04:46 Can you imagine, 04:48 there's hundreds of those little grooves. 04:50 Kind of reminds me of a record, 04:51 you know, an old timey record 04:52 where they played music from a record, 04:54 but you guys don't know what records are, do you? 04:56 No. No, no. 04:58 I do unfortunately. 04:59 Okay. All right. 05:01 But that doesn't date you, that's for sure. 05:03 But those are little tiny grooves 05:04 and that's what makes a flat lens like this. 05:07 It makes it look and perform just like our thick lenses 05:11 that are, you know, thin in the, on the sides. 05:13 And they get thicker on the middle 05:15 and then thinner on the edge. 05:17 How cool is that? 05:18 So this, these are called a Fresnel lens, 05:21 that's pretty cool. 05:22 And we use it in an optics. 05:24 In fact, you know, if I put my... 05:26 Can you see what I look like? 05:28 Did that change? 05:30 Funny face. Did that change? 05:33 I mean, that's really cool, isn't it? 05:35 Okay. 05:36 So each one of these has a focal point. 05:39 Has a focal point. 05:40 And if you put this 05:42 and if we want to read the newspaper, 05:44 if I hold the lens way out like this 05:45 from my reading, 05:47 from the words, you know what? 05:49 It's all blurry, check it out. 05:50 Hold it real far away 05:52 and see if you can read anything on that paper. 05:54 Can you see it? 05:55 I can see a big A. Okay. 05:57 Now move it closer, move it closer, move it closer. 05:59 Move it closer until you can see it 06:00 just absolutely perfect. 06:02 Whoa! 06:03 So that's what we call the what. 06:05 That's the focal point, right? 06:06 So the focal point is 06:08 when you can see it very, very distinctly, 06:10 and that's the focal point of each lens. 06:13 Different lenses have different focal points. 06:14 Hey, you know what? 06:16 We made a very special lens 06:17 and it's over here and it looks like, 06:19 it's a tower, isn't it? 06:21 But there is something special on top of the tower. 06:23 Here, come on over here, check this out. 06:25 I'm going to bring my newspaper over here. 06:27 And I think I'm going to put my safety glasses on too. 06:29 Check this out. 06:30 Now, gather around over here so we can see, check off that. 06:34 What's in the top? Water. 06:36 It's water. 06:37 Now the answer, can water be a lens? 06:41 What look at the shape? Does that shape? 06:42 That shape kind of look like a lens? 06:44 Yeah. 06:45 It's kind of roundish, right? 06:47 Kind of roundish. That's interesting. 06:49 So, you know, all we have to do is 06:50 we have to find a focal point, 06:52 but look on the ground right here. 06:54 And so it's taking the sunlight. 06:55 The sun has a tremendous amount of energy. 06:58 And what that, that spot of water is doing. 07:01 It's taking all of the solar energy 07:04 that's shining on just the water. 07:06 And it's focusing 07:07 all of that energy into one point 07:09 or into just this little tiny point right here. 07:12 So look, all we have to do 07:14 is to figure out where the focal point is. 07:17 So you can put your hand in that sunlight. 07:18 Okay? 07:20 And then if you put it, 07:21 if you go further and further up 07:23 and when it gets the hottest, 07:24 then you know, that's the focal point. 07:25 Isn't that cool? Is that hot? 07:27 Yes. Hot. 07:28 It's real hot. 07:29 And what do you think the focal point is? 07:31 Do you wanna try it real quick? 07:32 Right here. Right about there. 07:33 Okay. That's hot. 07:35 Now let's see what we can do with that? 07:36 Can we do some work with that? Yes. 07:38 Well, that's what we call solar energy 07:39 and every night and every day, 07:41 every night, every night and every day 07:43 the sun is on, isn't it? 07:45 Does the sun ever turn off? No. 07:47 The sun never turns off. Okay. 07:49 But we have nighttime because we're in the dark side, 07:52 but let's try to get that focal point 07:54 where that sun is the hottest. 07:56 Okay. And I'm going to feel it with my hand. 07:58 Let's see. It's what, it's down here. 08:00 Wait, hey, no, wait, wait, wait. 08:02 I need to get all of it if I can. 08:04 I'm going to get it to the hottest point on my hand 08:06 without burning my skin off. 08:07 Well, right there. 08:09 Let's see what we can do. 08:10 Let's see if we can gather all of that heat. 08:12 Oh. 08:14 See what happens right here. 08:15 See what happens. Burning the paper. 08:18 What's happening to my paper? 08:19 It's burning. 08:21 It's burning, that's interesting, isn't it? 08:23 So that is solar energy 08:25 and that solar energy is amazing, isn't it? 08:28 We use solar energy for heat, don't we? 08:30 Yeah. 08:31 And we use solar energy for what? Light. 08:34 You know, we get a lot of light from the sun as well. 08:36 It's interesting. 08:38 And so there's my little newspaper right here 08:40 and it's getting so hot. 08:41 Look at... Well, step back, step back. 08:42 What do we got? A fire. 08:44 We got a fire, we started a fire with water. 08:47 Did you know, you could start a fire with water? 08:48 No. 08:50 I'm going to set it down on the ground. 08:51 Look at that. Whoa! 08:53 So we actually set a fire by using water, 08:57 but you know, can water put out a fire? 08:58 Yeah. 09:00 Oh, yeah, water can put out a fire 09:02 and water can also start a fire. 09:04 That is wild. 09:06 Yeah, it is wild, isn't it? Okay. 09:07 Well, I'll tell you what we're going to do. 09:09 What we're going to do is 09:10 we're going to take some heat away from that. 09:12 I'm just going to put that on top of right there. 09:13 Let's take some heat and some oxygen away from it. 09:17 We don't have to worry about it. 09:18 That's cool. Hey, let's go back over to the table. 09:20 Okay. 09:21 And I think we're going to be okay right there. 09:23 Yeah, I think. 09:24 You might want to move the paper away 09:26 from that spot right here. 09:27 And you want to have right here? 09:28 Water bottle. 09:30 I got a water bottle, but you know what? 09:31 We know that water can start a fire, can't we? 09:33 It's interesting. 09:34 Well, you know, should you ever throw bottles like this way? 09:37 Some people do, but instead of throwing away, 09:39 we ought to do what? 09:40 Recycle. We have to recycle. 09:41 That's right. 09:43 But you know, just a water bottle like this. 09:44 If there's a little bit of water inside of it, 09:46 you can actually focus the sunlight through it. 09:49 And you could actually start a fire 09:50 with a little bottle of water like this, 09:52 by holding it just right. 09:54 Because water, we can make a lens out of water, can't we? 09:59 Isn't that interesting? Yeah. 10:00 But you know, that sun is amazing, isn't it? 10:02 Can we live without the sun? No. 10:05 Can't live without the sun. 10:06 Can't do it because our earth would get too what? 10:09 Cold. Get too cold. 10:10 And we don't want to be too cold, do we? 10:12 No. 10:13 We don't. Not at all. 10:15 Don't want to. No, we don't. 10:16 So, I have to say now, 10:18 you know, not to do this at home, right? 10:20 You can get works with a magnifying glass too? 10:22 Have any of you tried it? Yeah. 10:25 Shall we try it? Yeah. 10:26 You want to try it? I always want to try it. 10:28 Do you think I'll work with this one? 10:29 Yeah. 10:31 Let's see, we might not have enough time, but let's try it. 10:32 Okay? Okay. All right. 10:34 I want to see. 10:35 I want to take some faint newspaper. 10:36 You get a piece of paper. 10:38 This one seems a little different. 10:40 Okay. We gonna try it. Okay. 10:41 Let's try it. Let's see. 10:43 Oh, this one was a pretty picture. 10:45 Coloring book. 10:46 So again, are you going to do this at home? 10:48 No. 10:50 Do it at somebody else's house. Yeah. 10:51 No, we don't want to do it at somebody else's house, 10:53 but this might take a little while, but see... 10:55 But move around here... 10:56 So sometimes... 10:58 Oh, I might not have the focal point. 10:59 Gotta get it just right. Oh, I got it. 11:01 Aunt Francine's having tough time. 11:02 And I've got the Fresnel lens too. 11:04 And I'm going to try the Fresnel lens. 11:05 And this is a piece of wood. 11:06 I think we could burn, burn the piece of wood 11:08 with this Fresnel lens? 11:10 Yeah. Oh. 11:12 What's happening? 11:14 It's smoking, it's smoking and smoking. 11:16 How cool is that? Oh, we got it on fire. 11:18 We are burning wood. Let's see. 11:21 Here let me see if I can burn your paper with this too. 11:23 There's our focal point. 11:25 I thought I can do it on this one, 11:26 but I'm not doing. 11:27 Be careful because on fire. Okay. Don't get burned. 11:29 Isn't that interesting? 11:30 That is wow. 11:32 That is quite easy. 11:33 That is amazing. 11:35 That is amazing. Cool. 11:36 Now they say where there's smoke, 11:37 there's what? 11:39 There's fire. 11:40 Okay, it's still smoking, 11:41 so we have to be very careful with that. 11:43 This is exciting. 11:44 I appreciate it. 11:46 Let's put this out. We want to be safe. 11:47 Okay? I'm gonna put it. 11:49 How many of you are ready to go back inside? 11:53 That was fun. 11:55 Now I've done something with a magnifying lens before, 11:57 but never like that. 11:58 That was just wonderful. 12:00 Didn't you enjoy that? Yes. 12:02 I thought that was just amazing. 12:03 What did you think? 12:05 Oh, I always like fire. 12:07 Yeah, but you're not going to play 12:08 with fire at home, right? 12:10 No. Okay. 12:11 We're not playing with fire. 12:12 We already know the safeties on that, right? 12:14 That's right. 12:15 But we have to be very careful with fire, don't we? 12:17 We do. We cook with fire. 12:18 We need fire to stay warm. 12:20 Warm ourselves up with fire. Yeah. 12:22 And we have the sun and it warms our planet up. 12:23 Right. 12:25 What would we do without that warmth from the sun? 12:27 You are right. 12:28 And it reminds me, 12:29 I mean, I like playing with magnifying lenses 12:32 because sometimes we want to look closely at Scripture. 12:36 Sometimes we want to just discover more 12:38 about God's Word, 12:39 and I'm thinking of a text in Jeremiah. 12:41 Can you find the Bible for me? 12:43 And I think it was Jeremiah, was it 29:11? 12:45 Yep. 12:47 Jeremiah 29:11. 12:49 What does that say for us, Iannah? 12:52 "For I know the thoughts that I think towards you, 12:54 says the Lord, 12:56 thoughts of peace and not of evil, 12:58 to give you a future and a hope." 13:00 The more we study God's Word, the more we can examine 13:03 and look in those lenses 13:05 because God can give us the energy 13:07 and the fire maybe to do God's will. 13:11 We need to have that energy for Jesus, don't we? 13:13 Yeah. 13:14 I like having that and a magnifying lens. 13:17 How many of you have a magnifying lens? 13:19 It's hard to find them. 13:20 Have you looked for one in this, in the stores? 13:22 I've tried to find them. 13:23 They're not easy to find, but if you have one, 13:25 take that time to look at things a little more closely 13:29 and think about the Bible texts about looking into the Bible. 13:32 Don't you think? Yeah. 13:34 I love reading more about God. 13:37 What do you think? 13:38 Absolutely. Absolutely. 13:40 And I'm so glad. 13:41 What did you like about outside today, Sebastian? 13:45 Lighting the things on fire was pretty good. 13:46 I think so too. 13:48 I just didn't imagine that 13:49 we could use water to start a fire. 13:52 Did you think that? 13:53 I didn't think that was possible. 13:55 I'm so glad that you are here with us. 13:57 So thank you for joining us. It's been fun, thank you. 13:59 It has been fun. 14:00 This is a wonderful time 14:02 and this is where we can see 14:03 God's creation all around us 14:05 because creation is? 14:07 Science. 14:08 Yay? |
Revised 2021-05-13