Long Sightedness and Short Sightedness – The Eye
- Retina – Light sensitive screen at the back of the eye. - Optic Nerve – Carries information in electrical form to the brain. - Cornea – Together with the lens, it forms part of the focusin...
Notes by Shane O'Brien
Notes, resources, and study guides.
Spring – Hopkins’ Poetry Notes
Summary - Written during a tough period in Hopkin’s life, living in Liverpool. - Inspired by the death of a blacksmith parishioner whom he cared for. - This poem marks the change between hi...
God’s Grandeur – Hopkin’s Poetry Notes
Summary - This sonnet celebrates the greatness of God. - Hopkin marvels at God’s magnificence. - He does not understand why people ignore God. - He laments the damage that we are doing t...
Guide to answering English comparative questions for Leaving Cert
There are three sections to the comparative study: Cultural Context, Theme/Issue and Literary Genre.Cultural Context This is the setting and society of the text. You are expected to discuss...
Chemistry Experiment: Flame Tests (Li, Na, K, Ba, Sr & Cu)
To carry out flame tests with salts of lithium, sodium, potassium, barium, strontium and copper.Procedure 1. Light a bunsen burner and adjust it to obtain a blue flame. 2. Dip the wooden sp...
Arrangement of Electrons in the Atom
To understand the arrangement of electrons in atoms, Neils Bohor understood the spectra. When white light (eg. sunlight or light from an ordinary electric light bulb) is passed through a pri...
The Mass Spectrometer
A mass spectrometer is used to: - Identify the presence of isotopes. - Measure the relative abundances of isotopes. - Measure relative atomic masses and relative molecular masses. - Identif...
Oil Refining: Organic Chemistry – Summary
Fractional Distillation: This involves the heating of crude oil, and separating the various mixtures in the basis of their boiling points.Octane Number The Octane Number of a fuel is a meas...
Theorems to Learn for Leaving Cert. HL
Theorem: A general proposition not self-evident but proved by a chain of reasoning; a truth established by means of accepted truths. 1. Vertically opposite angles are equal in measure. ...
Axioms, Corollaries & Theorems - Part 1
Axioms Axiom: A statement or proposition that is regarded as being established, accepted, or self-evidently true. 1. Axiom 1: There is exactly one line through any two given points 2. Axio...