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...
Notes by Shane O'Brien
Notes, resources, and study guides.
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...
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...
Die Schule – Q & A for German oral exam
Some questions and answers about school life that may appear in your German oral exam. Wie kommen Sie zur Schule? Ich komme immer mit dem Bus zur Schule. Welche regeln gibt es hier? Die ...
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...
Leaving Cert. Maths Construction Video Tutorials
Angle BisectorPerpendicular Bisector of Line SegmentPerpendicular through point not on linePerpendicular through point on lineLine parallel to given line through a pointDivision of segment i...
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...
All Chemistry Definitions to Learn for Leaving Certificate - Higher Level
The Atom - Dalton’s Atomic Theory: All matter is made up of indivisible atoms which cannot be created or destroyed. - William Crookes discovered the Electron. Cathode ray tube. - JJ Thomson...
All Physics Definitions for Leaving Certificate - Higher Level
Light - Refraction is the bending of light as it goes from one medium to another. - Laws of Refraction: (1) Incident ray, refracted ray & normal are on the same plane. (2) Sine I/Sine R i...