 Here is our lightboard setup. We're actually in the server room and you hear the little noise here But luckily software is able to cancel that out But it was more or less the most quiet space we could find in the college so once you get in here first to do is you fix Your cell phone which one you're gonna be filming onto this little pole and You make sure that you actually have focus on the entire board so that you cut on cut anything off You can later edit it with the software to cut out this little wooden Pillars on both side One of the earlier mistakes I made Was using a software without being able to fix the focus So if you use a software that has fixed focus You can make sure that it always focuses on the plane of the lightboard and not somewhere else See we'll be standing behind the lightboard for talking You actually need a second cell phone to which you can hook up the microphone And then again use the software to connect the soundtrack from one phone to the video You're doing on the other here. You're actually seeing my prompt for the next video I'm pro on top of helping me With knowing what I'm gonna talk about it also helps me to remind to remind me to look into the camera to turn on the lightboard You simply push this button here and Then the light of the board itself as well as the background lighting will come on You can actually adjust the settings on the corner here But usually full power provided the best results Don't forget to turn off the main light when you start filming Another thing when you look here you actually see that our board already has some scratches Which look very horrible If you stand behind the board But turns out when you're filming it from the other side at the end It's not really visible that you have all these scratches on the board This video is going to be an introduction to linear momentum First of all, what is momentum? Momentum, which we usually use the letter P It's defined as The linear inertia times the velocity The linear inertia turns out to be just the mass of an object I have downloaded my video file as well as my audio file and I'm going to put them together Using iMovie in my case. So I'm going to start by creating a new project. I'm going to do a movie then I'm just going to drag my video on here and My audio right next to it Now the first thing I have to do is I have to try to synchronize the audio of the video with the audio from the file and Hopefully I made some clapping movement that will tell me Where I started recording so apparently here on the video track Is where I started So let's get rid of First part that we don't need. So here is where my sound track starts The clip and I'm just gonna move it and try to really really really arrange it Zoom in a bit and it looks like I nailed it. The sound right now sounds like it's Completely synchronous. So I can cut my videos to the beginning Click click click clip those two are attached. I can detach the original audio from Video which I don't need anymore And I get rid of the one from video itself and let's test how it looks Sounds good next thing I do on the audio I'm gonna reduce the background noise and enhance Then you probably realize that the writing on the screen is backwards. I'm gonna fix that To do this you click on the video and then you go into the special options And then you have here the option of flipped So you simply click flipped and you see the writing now is in the correct direction No problem And we can read this Okay, so now the next thing I shot this video by taking video. That's a bit too big So I will have to crop the video out So I'm gonna be cropping a Video and I hope it's gonna be working out with my frame. So if I was to do this I Would lose my bottom of the screen. I'm not sure how far down I was actually writing in this video Gonna have a look Used to be okay Used to be okay Yeah, I seem to have just used Right amount of size of my screen. Let's make it a little bit smaller and Then Go so now you don't see the frame anymore. Now, I'm just gonna hit here the odd point proof It's color stabilization and some other issues and now probably my video is already good This video is gonna be an introduction to linear momentum First of all, what is momentum? Momentum which we usually use the letter P defined as The linear inertia times the velocity The linear inertia turns out to be chess the mass of an object I'm thinking of the momentum as a measure of the magnitude of Motion in a certain direction or dependency of an object or a system of objects to continue traveling in a certain direction linear momentum follows a law of conservation