Liam Stephenson controlled assessment Introduction In my course work I will be looking at how the thickness of a converging lens affects the focal length. The factors involved in this experiment are: light, lens curvature, refraction and thickness of the lens, these will determine the focal length; the focal length is the length between the focus and the lens. Light-visible light is an electromagnetic wave in the electromagnetic spectrum The speed of light depending on the medium it is in, for example the speed of light is 300,000 km/s however when light travels through other medium such as water or glass the speed of light is slowed this is because water and glass is denser than a vacuum of air. Due to it being more dense and a change in speed, the direction of the wave will change this is
Binder Groups- Cable pairs are typically arranged under the cable sheath in binder groups 15. Hybrid/ Composite Cable- An assembly of two or more cables (of the same or different types or categories) covered by one overall sheath/ An RCA connector, sometimes called a phono connector or cinch connector, is a type of electrical connector commonly used to carry audio and video signals. 16. Pulling Cables17. Wavelengths of Light- the distance between two
Question 41 What type of availability attack is described in the diagram below? Question 42 ________ can occur when an analog connection creates an electromagnetic field around its conductors, inducing its waveforms on a nearby analog connection. Question 43 What is the administrative distance of Routing Information Protocol (RIP) routing protocol? Question 44 Which of the following is a common OSI Layer 3 (network layer) troubleshooting issue? (Choose 2) Question 45 Look at the topology shown below.
The pictures below give an example of these motions. The infrared spectrometer can cause these motions/vibrations to occur in the bonds by hitting the compound in question with light in the infrared range of the electromagnetic spectrum. Vibrations in bonds occur between 8 x 10-5 cm and 1 x 10-2 cm, and the typical IR spectrometer operates in frequencies between 5 x 10-4 cm and 25 x 10-4 cm or 4000 cm-1 to 400cm-1. Frequency is reported as either wavenumber (denoted by ν̃) or cm-1. ν̃= 1/ λ, or wavenumber is equal to one over wavelength.
Revision for Unit 5 Optics Definitions 1. Absorb: Is the process where light energy is taken in the object and converted to thermal energy. 2. Transmit: Is the process where light rays (or energy) go through the object and out of the other side. 3.
Light energy is a form of electromagnetic energy. It is the only form of energy that we can see directly. We can see it because light reflects, or bounces off of an object and into our eyes so we can see it. Light is a kind of energy that can move in waves and it is made up of a flow of small particles of energy called photons. There are many sources of light.
Data is sent through radio waves in either 3G or 4G connection, which streams data to and from the phone, much like a computer connects to the internet. B. Demarcation Point- it is the point that defines the end of the telephone company’s wiring, and the beginning pf your wiring, it defines where the telephone company’s responsibility for maintenance ends and your responsibility begins. It contains a surge suppressor to help
Unit 3 Exercise 1: Specifications – Definitions by: Timothy Robertson 1. Application- The technology that will take advantage of cabling systems. Applications include telephone systems, Ethernet, token ring, ATM, etc. 2. Unshielded Twisted Pair- A cable used in computer networking that consists of two shielded wires twisted around each other.