Philips HB558 Manual Del Usuario página 7

For optimum comfort use the appliance at ambient temperature
approx. 18c C
The Sun
The sun is the source of energy on which all life on earth depends.
There are various kinds of solar energy: the sunlight enables us to see,
we feel the warmth of the sunshine on our skin, and under the
influence of the sun our skin is tanned.
These three effects are due to three specific components of the sun
radiance spectrum, each of the components having their own wave
lengths.
The sun radiates electro-magnetic vibrations with widely different wave
lengths.The wave lengths of heat rays or "infrared" (IR) are longer than
the wave lengths of visible light.
And the wave lengths of "ultraviolet" (UV), which tans our skin, are
shorter than these.
Science has managed to reproduce these three kinds of solar radiation:
heat (e.g. Infraphil), light (lamps) and UV (solariums, sun couches etc.)
UV-A, UV-B and UV-C
Ultraviolet (UV) is subdivided into UV-A (longer wave lengths), UV-B
and UV-C (shorter wave lengths).
UV-C seldom reaches the earth as it is filtered out by the atmosphere.
UV-A and UV-B cause the tanning effect of the skin.
In fact there are two processes which produce tanning, and they are
simultaneously effective:
- "Indirect tanning". Primarily UV-B stimulates the production of a
substance called "melanin", which is necessary for tanning.The effect
does not show until a couple of days after the sunbath.
- "Direct tanning".The UV-A and also a part of the visible light cause
quicker browning without reddening or "getting sunburnt".
The Combi solarium
This Combi solarium emits predominantly UV-A, and also a very small
amount of UV-B.
It possesses some important features which make tanning at home
comfortable and convenient.
The unique type of sun lamp used in this solarium emits light, warmth
and ultraviolet, just like the natural sun.
The lamps have been positioned in such manner that your whole body
is tanned evenly, from head to toe.
For your convenience, but also to prevent unintended prolonged
exposure (e.g. after falling asleep), a timer-controlled automatic switch-
off operates after 30 minutes tanning.
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