Full Answer
What is a Troxler used for?
A nuclear density gauge is a tool used to test the density of construction materials in the commercial construction industry. It is used on road/highway, wind, and solar projects, among others.
What does the Troxler test?
The Troxler Models 3430 and 3440 RoadReader™ nuclear moisture/density gauges measure the density and moisture of soil, aggregate, concrete and asphalt materials in the field for quality control purposes.
What is a Troxler nuclear density gauge?
The Troxler nuclear moisture density gauges are used by many contractors, engineers, and highway departments for compaction control of soil aggregate, concrete, and full depth asphalt. The gauges meet or exceed the ASTM standards D6938, D2950, and C1040.
How much does a Troxler 3440 cost?
New Troxler 3440 T-3440 $18,000 approx.
How long does the Troxler effect take?
The Troxler Effect kicked in quite quickly. Within about ten seconds, features of my face started to blur and disappear. My right eye (the point I was focusing on) stayed visible but in slightly soft focus. It started with my other eye become darkened, enlarging, and vanishing.
Does the Troxler effect work on everyone?
The Troxler effect is a particularly dramatic and simple demonstration of how much our visual system adapts to the environment. Just stare at the center dot in this figure for about 15 seconds, and the outer ring should fade completely from view! But the illusion, like nearly all illusions, doesn't work for everyone.
How much does a Troxler 3430 cost?
Various Troxler 3430 & 3401-B Nuclear Density GaugesAuction ClosedSold Amount:$2,500.00Buyer's Premium (5.00%):$125.00Total Price:$2,625.003 more rows
How do you standardize a Troxler?
0:332:20AASHTO T 310 - Nuclear Density Gauge - Standard Count - YouTubeYouTubeStart of suggested clipEnd of suggested clipFor a Troxler gauge the key pad is to be placed closest to the metal plate on the end of theMoreFor a Troxler gauge the key pad is to be placed closest to the metal plate on the end of the standard block. For other gauges refer to the manufacturer's.
How much does a nuke gauge weigh?
Dimensions/WeightGauge:Dimensions (base):15.75" x 8.66" x 5.5" (400 x 220 x 140mm)Handle Height:18" or 21.5" (450 or 550mm)Weight:30 lbs (13.6kg)Reference Standard:9 more rows
How long is a nuclear gauge certification good for?
three yearsDOT HazMat Refresher Training for Nuclear Gauges is also required every three years.
Are nuclear density gauges safe?
Health Risks - Nuclear Gauges contain radioactive source material and are potentially dangerous if used improperly. However, research findings indicate no radiological health hazard exists for operators of nuclear gauges when appropriate safety precautions are observed.
How does a nuclear Densometer work?
In geotechnical engineering, a nuclear densometer or soil density gauge is a field instrument used to determine the density of a compacted material. The device uses the interaction of gamma radiation with matter to measure density, either through direct transmission or the "backscatter" method.
What is the Troxler Effect?
The Troxler effect is a phenomenon of visual perception that can cause an image to disappear or alter. In technical terms, Troxler fading is the apparent reduction or elimination of a visual stimulus when gazed at fixedly but covertly. The effect is named after Swiss physician and physicist Franz Carl Simon Troxler (1755–1834).
How does the Troxler effect work
People who hear colors or see sounds are not necessarily off their rockers. In fact, they might be right, and it's a science that backs them up. The Troxler effect is a cognitive phenomenon in which someone's perception of an object changes due to their previous exposure to a different image.
When Can I Expect to See the Phenomenon?
As a simple experiment, look at your TV screen from a few feet away. Without changing anything, stare at it for about half an hour. If you look away for just one minute and then glance back, you'll notice that something is slightly different than when you left off.
How to do the Troxler effect mirror
The next time you're waiting at a grocery store, sit down and watch people walk by. Eventually, you will stop seeing them as individuals, but a floating mass of faces that all look slightly different. This is an example of something called the Troxler effect or fading affect bias.
How does Troxler's fading work?
The neural adaptation effect of Troxler's fading can be experienced by looking at the cross from a short distance without moving the eyes. After a few seconds, the colors seem to vanish. [Click on image to enlarge]
Why does Troxler's fading occur without any extraordinary stabilization of the retinal image in peripheral vision?
Troxler's fading can occur without any extraordinary stabilization of the retinal image in peripheral vision because the neurons in the visual system beyond the rods and cones have large receptive fields.
Why does Troxler's fading fade away?
For example, if a small piece of paper is dropped on the inside of one's forearm, it is felt for a short period of time. Soon, however, the sensation fades away. This is because the tactile neurons have adapted and start to ignore the unimportant stimulus. But if one jiggles one's arm up and down, giving varying stimulation, one will continue to feel the paper.
What is the Troxler Effect?
The Troxler effect (also known as Troxler fading) was first discovered by Swiss physician and philosopher Ignaz Paul Vital Troxler. The effect was first recorded in 1804 when he observed that staring at a fixed point for an extended period of time would cause the peripheral areas of the image to fade away.
How does the Troxler Effect Work?
The Troxler Effect is another example of “filling in the gap.” We have referenced this phenomenon many times on our blog. When we say “filling in the gap,” we are describing the way that the human brain fills in the gaps in perception when there is a factor clearly missing.
How the Effect Works in the Eye
Without getting too scientific (we’ll leave that to your ophthalmologist), we also want to talk about how the Troxler effect transmits the image to the brain through the eye. When you are fixing your gaze on an image, your eye is never completely still.
Troxler Effect
In the summer before fourth grade, my parents enrolled me in a kids’ camp at a local community center. In all, there were about 20 kids in the troupe and I recognized a few of them as classmates from school.
The Troxler Effect
The Troxler Effect was first discovered in 1804, by Swiss philosopher and physician Ignaz Paul Vital Troxler. Troxler found that firmly concentrating on a single element in the visual field can make surrounding elements appear to gradually fade away.
Overview
Troxler's fading, also called Troxler fading or the Troxler effect, is an optical illusion affecting visual perception. When one fixates on a particular point for even a short period of time, an unchanging stimulus away from the fixation point will fade away and disappear. Research suggests that at least some portion of the perceptual phenomena associated with Troxler's fading occurs in the brain.
Discovery
Troxler's fading was first identified by Swiss physician Ignaz Paul Vital Troxler in 1804, who was practicing in Vienna at the time.
Process
Troxler's fading has been attributed to the adaptation of neurons vital for perceiving stimuli in the visual system. It is part of the general principle in sensory systems that unvarying stimuli soon disappear from our awareness. For example, if a small piece of paper is dropped on the inside of one's forearm, it is felt for a short period of time. Soon, however, the sensation fades away. This i…
Explanation of effect
Troxler's fading can occur without any extraordinary stabilization of the retinal image in peripheral vision because the neurons in the visual system beyond the rods and cones have large receptive fields. This means that the small, involuntary eye movements made when fixating on something fail to move the stimulus onto a new cell's receptive field, in effect giving unvarying stimulation. Further experimentation this century by Hsieh and Tse showed that at least some portion of the …
See also
• Cognitive science
• Lilac chaser – An illusion that involves Troxler fading
External links
• Troxler project: a research project on Troxler's fading