Science Buddies
The Physics of Bouncing a Ball | Science Project
In this physics science fair project, students will investigate the rebound height limits and linearity of dropped bouncy balls.
Curated Video
Speed of Sound
Sound waves move through different mediums at different speeds, but why is this? What factors affect the speed of sound? Physics - Waves - Learning Points. Speed of sound depends on many different factors. Temperature, elasticity and...
Curated Video
Liquid Nitrogen Demos
We look at how different materials change when they are exposed to liquid nitrogen. Flowers become frozen and stiff and the petals snap. A banana hardens and is strong enough to be used as a hammer and a squash ball becomes very brittle...
Curated Video
AWS Certified Solutions Architect Associate (SAA-C03) - General Best Practices
In the final video of this course, you will review best practices related to high availability, scaling and continued learning. Consider this an important checkpoint in the learning process. If you do not fully understand any of the...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - TCP, UDP, and ICMP
TCP is the most popular IP protocol, but it isn't the only one. User Datagram Protocol (UDP) and Internet Control Message Protocol (ICMP) both serve important purposes and features that techs need to understand. This clip is from the...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Multiple Monitors
The CompTIA A+ concentrates on Windows, but every operating system gives you the ability to use more than one monitor. Make sure you understand the power of multiple monitors as well as how to install and configure them. This clip is...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Installing a Graphics Card
Graphics cards often require special treatment when installing them in terms of power and cooling. In addition, systems need special drivers to take full advantage of the power of most graphics cards. This clip is from the chapter "Book...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Resolutions and Aspect Ratios
More resolution means a more detailed picture. Monitor resolutions have increased for decades, and a good tech understands common resolutions and aspect ratios. This clip is from the chapter "Book Chapter 17 - Display Technologies" of...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Graphics Cards and Connections
Monitors don't create the images they display; that's the graphics card's job. Graphics cards come with different features and capabilities that a good tech understands very well. This clip is from the chapter "Book Chapter 17 - Display...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - LCD Breakdown
The Liquid Crystal Display (LCD) is the dominant technology for today's monitors. A good tech should possess a deep understanding of how LCDs work and how to open and repair an LCD monitor. This clip is from the chapter "Book Chapter 17...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Monitor Technologies
There's more than one way to make a monitor, but they all share one very important common feature: the pixel. Once we understand that all monitors have pixels, it's easier to understand the different technologies you might find in a...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Installing and Troubleshooting Expansion Cards
Even though we live in a world of built-to-exact-specification systems, you will eventually need to install and possibly troubleshoot expansion cards. Let's look at the modern expansion card formats and then get hands-on and troubleshoot...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Common Peripherals
Peripherals allow us to expand our system to support new features such as printing, sound, and external storage. They also enable a wide array of input devices like mice and keyboards. Knowing how to identify each of them quickly is key...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Readers and Scanners
A broad cross-section of peripherals scans and read data. From flatbed scanners to barcode readers and card readers, these devices make our users' lives easier and more convenient. This clip is from the chapter "Book Chapter 10 -...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Optical Media
Shiny optical discs are an excellent media for transporting data and are still a very common tool for delivering drivers and configuration utilities for hardware. There's several different optical standards and it's critical to know that...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Thunder and Lightning
Thunderbolt and Lightning connectors are high-speed alternatives to USB. A good tech recognizes when these technologies are used, their unique connectors, and the benefits/weaknesses they have compared to USB. This clip is from the...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Configuring USB
Most USB devices work well fresh out-of-the-box. For those that don't, it's important to have a proper USB configuration process to make sure a USB device and all of its features work properly. This clip is from the chapter "Book Chapter...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Understanding USB
Why are there USB Type-A and USB Type-B connectors? Why do modern systems still provide older USB connectors when the latest USB perfectly supports older devices? It takes a good understanding of the USB standards to see how and why....
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - USB Standards
The Universal Serial Bus (USB) interface is the main peripheral interface these days. Make sure you're aware of different USB standards as well as the different types of USB connectors. This clip is from the chapter "Book Chapter 10 -...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Mass Storage Troubleshooting
Mass storage devices sometimes fail, resulting in the potential loss of critical data. A good tech knows the tools and procedures to diagnose and repair many mass storage problems. This clip is from the chapter "Book Chapter 9 -...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Encrypting Mass Storage
Securing mass storage is a critical aspect of system security. Make sure you know the many ways a system's mass storage can be encrypted. This clip is from the chapter "Book Chapter 9 - Implementing Mass Storage" of the series "CompTIA...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Software RAID in Storage Spaces
Microsoft's Storage Spaces feature provides a superb tool to configure many different RAID configurations on any Windows system. A good tech knows which types of RAID it supports and how to set them up. This clip is from the chapter...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - Hardware RAID
Hardware RAID uses a purpose-built RAID controller to configure and maintain RAID arrays. It's important to understand the benefits of hardware RAID and how to configure and maintain RAID arrays. This clip is from the chapter "Book...
Curated Video
CompTIA A+ Certification Core 1 (220-1101) - RAID
The Random Array of Independent (or Inexpensive) Disks (RAID) is a philosophy of using multiple drives working as a single drive – an array – for speed or redundancy. A good tech should understand the many RAID levels and the benefits...