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