Video Finder
| Letter | Term | Description | Category |
|---|---|---|---|
| R | Refractive Index | Refractive index or index of refraction is the measure of the bending of a ray of light when passing from one medium into another. |
Physics |
| R | Rhesus Factor (- / negative) | Someone who does not have the Rhesus antigen on their red blood cells. It is involved in haemolytic disease in newborns, and incompatibility in blood transfusions. |
Pregnancy |
| R | Romania | Country in south-eastern Europe. |
Geography |
| R | Rhesus Factor (+ / positive) | Someone who has the Rhesus antigen on their red blood cells. It is involved in haemolytic disease in newborns, and incompatibility in blood transfusions. |
Pregnancy |
| R | Russia (1) | Transcontinental country spanning Eastern Europe and Northern Asia. |
Geography |
| R | Rain | Condensed moisture of the atmosphere falling as separate visible drops. |
Environmental Science |
| R | Rhesus Factor (+ or - / positive or negative) | An antigen that many people have on their red blood cells. It is involved in haemolytic disease in newborns, and incompatibility in blood transfusions. |
Pregnancy |
| R | Refraction | Refraction is the bending of a light (or sound) wave when it moves from one medium (substance) to another e.g. if you half submerge a pencil in water, the pencil looks bent. |
Physics |
| R | Russia (2) |
Transcontinental country spanning Eastern Europe and Northern Asia. |
Geography |
| R | Rise In Temperature | An increase in temperature (over time). |
Environmental Science |