Radiation Flashcards
In physics, radiation means:
The electro-magnetic waves in space
The unit of frequency is:
Hertz
In physics, frequency means
The number of times per second an electro-magnetic-wave can change direction
The unit of frequency is:
Hertz
Hertz is a unit of:
Frequency
In the visible spectrum the colors in the correct order are
Red, orange, yellow and green
In the visible spectrum the colors in the correct order are:
Green, blue, indigo and violet
Invisible rays which can be used in beauty therapy are:
Infra-red and ultra-violet rays
Infra-red radiation
Is invisible and can be felt
Infra-red radiation is absorbed:
In the dermis and muscles
Infra-red rays can be used in beauty therapy for:
Warming
The effect of infra-red rays on the skin is to:
Warm the deeper layers of the skin
An indication for a treatment with infra-red rays is:
A poor blood circulation in the skin
A contra-indication to treatment with infra-red radiation is:
Skin showing teleangiectasias on the cheek area
Infra-red radiation is used:
To warm the tissues before massage
Ultra-violet radiation can be useful in beauty therapy because of the:
Chemical effect on the skin
Which of the following radiation has the most anti-bacterial effect?
UV-C
What is the safest radiation that can be used to increase pigmentation?
UV-A
Which rays are mostly used in ray-treatments to increase pigmentation?
UV-A and UV-B
Ultra-violet radiation is absorbed:
Mainly in the epidermis
The radiation mainly responsible for tanning the skin is:
UV-A
Skin cancer is moat likely caused by:
Ultra-violet