hello and welcome back to the channel in today's episode we'll be looking at the core content 1.5 mechanical devices used to produce a movement let's get started so as you can see from our diagram this is going to be a really useful part of a revision tool used for you guys at home if you guys are home want to do the same thing you just create this on an a4 sheet of paper and mindmap these ideas out so there are four types of movement when we're talking about the types of motion we've got InDesign technology the first thing I'd like to talk about is the fact that I will go between the word motion and movement they mean the same thing so if I'm talking about a movement that's going backwards and forwards the motion will be to go backwards and forwards so don't get confused with those two words if I flip between the two I'm essentially mean the same thing okay so the first type of movement we're going to look at is a movement called linear now linear moves in a straight line and it is a movement that we would find on something like let's say a train on like a track that just goes forwards so if you were to describe but the movement or motion of a train would be you would say what's a linear movement now the straight line is important here so I've want to line that you know to help me memorize this add a little splash of color in there and to go with it and I'm going to draw a little diagram of a train a little carriage on the back and to help even further I'm then gonna draw in a different color that movement as an arrow I don't think I need to but I'll put it down anyway train a second type of movement is a reciprocation now the reciprocation movements quite interesting because it does move forward that it also moves backwards so you could reciprocate a conversation with another friend so if you talk to them and they talk back to you you're reciprocating backwards and forwards same motion or movement can be said about going up and down so if you think about a car engine like a piston and it drives up and drives down it's the same thing you would describe that movement as a reciprocating motion okay so moving backwards and forwards in a straight line again that's important so Island aligned it it's a straight line moreover the backwards and forwards parts are crucial to the reciprocating movement let's assign that a color okay and I talked about engine so I'm going to draw some little pistons it will move it up and down like on a car engine like that and then to help me remember those do I'm going to put that arrow of movement so I can see that they're going up and down and again I'll just add the label it's a piston a third type of movement we're going to look at is rotary [Music] now rotary movement it probably goes without saying is something that rotates around a central point like a wheel on a car so it is a motion that moves around a Pitts point [Music] I said a blob of color to that one as well there we go now you don't have to stick to these colors if you don't want to might be useful if you're using this as a revision tool later on there example Susan there's the tile up to you let's get my wheel in there let's make it look a bit more like a bike wheel [Music] that moment is going around so again I'm gonna use that I wrote to tell me it will remind me what it's doing it goes without saying really but let's draw the example down anyway now our fourth movement is something called oscillation better think about the spelling there for a second now oscillation is a swinging movement it's a movement that would work on something like pendulum ever seen those devices at home sometimes you have them in offices where you have five silver balls they're on a little pendulum and then pull one back and it knocks this one it knocks the other than that one flies off and it comes back down again and it's swinging back up again like that or that motion that movement is an oscillating movement that swinging motion so it is a motion that swings backward and forward [Music] now can you remember how we went to linear and reciprocation we underlined the word straight that's because of oscillation oscillation swings now if your exam you had a question that told you something like name the moment that goes backwards and forwards well unless they've said it's swinging backwards or forwards it's going to be a solution if they just say it's backwards forwards then it's reciprocation so let's get a lot of color in there for this one there we go and let's draw our little picture to go with it [Music] and then our movement which is going to be a swinging movement you don't have to use these examples you can course use your own examples but this experiment they'll be looking at these examples just so they get a clearer picture of what those movements are actually doing so in this session we've looked at identified the four types of movement that you'll come across in design technology they are linear oscillation reciprocation and rotary we've described what those movements do we've given an example of each one and we've drawn an example of each one we've then color-coded it to create a beautiful revision resource that we can use at home maybe it's a flash card maybe something we cover up or just simply go back up for me at the channel stay safe until next time don't forget to subscribe [Music]