Although this is not strictly language-related, after
the summer break and to get off on the right foot I thought now would
be a good time to discuss ergonomics in the workplace. In addition to
learning a few office-related terms, we can also take a closer look at
the applied science that seeks to adapt work or working conditions to
suit the worker (ergonomics) and that age-old Chinese practice
of directing invisible energy, or "chi" through your environment for maximum
physical, mental, and spiritual health and balance, feng shui,
(pronounced "fung shway").
Ergonomic guidelines for arranging a computer workstation.
Posture, posture, posture! Good posture is the
basis of good workstation ergonomics. Good posture is the best way to
avoid a computer-related injury. To ensure good user posture:
- Make sure you can reach the keyboard keys with your
wrists as flat and as straight as possible. Avoid overreaching.
- Your elbow angle (the angle between the upper arm
and the forearm) should be at or greater than 90 degrees to avoid
nerve compression at the elbow.
- Sit back in your chair with a good back support. Also
check that your feet can be placed flat on the floor or on a footrest.
Keep it close!
- Make sure that the things you use most frequently
are placed closest so that they can be conveniently and comfortably
reached (e.g., phone).
- Make sure you are centred on the alphanumeric keyboard.
Most modern keyboards are asymmetrical in design (the alphanumeric
keyboard is to the left and a numeric keypad to the right). If
the outer edges of the keyboard are used as landmarks for centring the
keyboard and monitor, your hands will be deviated because the alphanumeric
keys will be to the left of your midline. Move the keyboard so
that the centre of the alphanumeric keys (the B-key), is on your mid-line.
The computer monitor
centre the monitor on you so that your body and/or
neck isn't twisted when looking at the screen. Put the monitor at a comfortable
height that doesn't make you tilt your head up or bend your
neck down to see it. When you are seated comfortably, your eyes should be
in line with a point on the screen about 5-7.5cm below the top of the monitor
casing. We actually see more visual field below the horizon than above it
(look down a corridor and you'll see more of the floor than the ceiling),
so at this position you should comfortably be able to see more of the screen.
If the monitor is too low, you will crane your neck forwards, if
it's too high youХll tilt your head backwards and end up with neck/shoulder
pain. Books, reams of paper, or monitor risers can be used to raise the
monitor.
viewing distance - the monitor should be at a comfortable
horizontal distance for viewing, which usually is around an arm's length
(sit back in your chair, raise your arm and your fingers should touch
the screen). At this distance you should be able to see the viewing area
of the monitor without making head movements. If text looks too small
then either use a larger font or magnify the screen image rather than
sitting closer to the monitor.
lighting - Glare on the computer screen and overall
light levels can contribute to eyestrain. Please review the following
if you are experiencing eye strain.
It is best to position the monitor perpendicular to
the window.
If you are unable to do so, control excessive light at the source, e.g.,
for window light, use blinds or drapes.
Your screen should also be vertical to reduce
glare from fluorescent overhead lights. When the monitor is tipped
up, light from the overhead light fixtures reflects onto the computer
screen, resulting in glare. Instead of tipping the monitor up to raise
it, raise the monitor from the base.
Is lighting level comfortable when working at the computer?
Lighting preferences vary between individuals. In general employees prefer
less light when using the computer than when doing deskwork. In many cases,
a good solution is to lower overall office light and purchase task
lighting so individuals can control their own light levels.
ABILITY TO SEE WHO ENTERS WORKSTATION (Feng Shui concept)
Seeing who enters your office adds a level of comfort by keeping
you from being surprised or startled. If you cannot view your workstation
entrance while on the computer, consider moving your computer work station
or consider mounting a mirror on the wall so you can see who is entering
your workstation even when your back is toward the entrance.
(to be continued)