Bright spot scintillator
The flickering sensation produced by a low-frequency flash stimulus is the flicker of light. As the flash frequency continues to increase, the flickering sensation gradually disappears and evolves into a stable light. We say that the highest frequency of flickering or the lowest frequency of forming stable light is the critical frequency of flickering (fusion critical frequency). The level of the critical frequency has now become the main indicator to detect people's attention and fatigue. The bright spot scintillator is based on this principle. The designed experimental instrument can accurately and intuitively measure the critical frequency.
Flashing frequency adjustable range 8.0HZ ~ 60.0HZ Power consumption is less than 5W
Flashing frequency display accuracy ≤ ± 0.1HZ Ambient temperature 0 ～ 40 ℃
Bright spot colors red, green, yellow Instrument size 8cm high × 20cm wide × 17cm deep
Hood 6cm × 15cm × 20cm (observation window)
Power supply 220V ≤ 22V
AC 50HZ
Mass 1kg
1. Slowly adjustable frequency generator
2. Highlight color selection and shading observation window
3. Frequency display part sampling speed 1 time / S
1. Experiment without strong external light interference
2. When the subject changes the frequency, the focus is on the change of the bright spot, do not observe the displayed value of the frequency
3. Observe the frequency and record only when the subject has determined the critical point
1. Turn on the power, the digital tube on the rear panel lights up, and one of the three light-emitting tubes lights up.
2. Select the bright red, yellow, and green colors to be displayed, and choose any one in the left corner of the rear panel.
3. The subject changes the frequency value, the front panel frequency knob is turned counterclockwise, the frequency is slowly reduced, the light spot flashes obviously, and the clockwise rotation frequency is slowly increased, and the light spot can be stable.
4. Observe the highlight program
4-1 First, gradually increase the low frequency band to find the critical point and make a record
4-2 Gradually descend from the high frequency band to find the critical point and make a record
4-3 Gradually descend from the high frequency band to find the critical point and make a record
4ï¼4 Then gradually rise from the low frequency band to find the critical point and make a record
Repeat the above 4-4-1-4-4 process to observe the critical points of the other two colors
colour
F ↑
F ↓
F ↓
F ↑
Determined value
red
green
yellow
One EP403 scintillator
Power cord
A copy of the manual
A certificate of conformity
Single packing
Outdoor Beach Chair brings you a wonderful lounge time at seaside or poolside.The materials synthetic PE rattan,aluminium frame and waterproof cushion are resistant to difference weather conditions and easy to maintain.
Outdoor Beach Chair is crafted from rattan wicker weaved into an aluminium frame. This combination help make this chair durable and comfortable all at once. The adjustable backrest allows you to adjust to different positions so that you can relax on the patio or by the pool.
Features
· For outdoor and indoor use
· High quality rattan plait
· Suitable to all weather conditions
· Easy to maintain
· Matches any outdoor decor
· Quick to assemble
· Adjustable backrest
Maintenance tips
· Do not use any abrasive cleaning agents for cleaning
· Clean the chaise lounge with a damp, soft cloth (you may use a mild cleaning agent) and wipe it dry afterwards
· In case of ceaseless heavy rain or during the winter, the furniture should be stored inside or have a protective cover on it
Outdoor Beach Chair is ranged in different style: Rattan Chair,Sing Mesh Chair,Aluminium Powder Coat Chair.Single and double chairs are available for option.
If you have any questions, please contact with us directly. Outdoor Sofa Furniture are produced
by Golden Eagle Outdoor Furniture With High Quality and Good Appearance. Welcome you can visit our Factory.For any inquiry,Please send mail directly to us.
Rattan Beach Chair,Sun Lounger Beach Chair,Pool Beach Chair,Chaise Lounger Beach Chair
Golden Eagle Outdoor Furniture Co., LTD. , https://www.gegardensets.com