I've worked in positions ranging from support roles like Receptionist and Administrative Assistant to manager. And I've worked in different fields and states on both sides of the nation. In addition, I've been an educator on the college level and have even done some substitute teaching in the public schools. I've taught literally everything from accounting to web design. So my experience is very broad. And I'm very pleased to announce that my job search book, "Think Like an Interviewer: Your Job Hunting Guide to Success" is finally done and available for sale. It took me over a year to complete and originally started out as a book on how to handle interviews. But morphed into a full-blown job search book that now covers cover letters to interviewing. You see, I've always gotten tremendous pleasure from sharing my knowledge with others. And that's the main reason why I left the business world and went into teaching.
Both scopes are refractors. One has a 60mm lens diameter with a focal length of 900mm. The other one has a 70mm lens and a focal length of 400mm. The prices are pretty close to each other. And the eye pieces for both are 20mm, 12mm, and 6mm. So I'm not sure whether it's better to opt for the larger aperture and smaller focal length or the smaller lens and larger focal length. What are your thoughts as to which you feel is best?5 AnswersAstronomy & Space2 weeks ago
I have a pair of industrial UV light safety glasses that says it blocks UVA, UVB, and UVC rays. The specs don't say anything about blue light blocking. So I was wondering if these glasses would also be good for reducing the eye strain and protecting the retina like you'd have with blue light blocking glasses. My guess is these glasses would block the blue light, but I don't know for sure. So I'll ask those of you who know things much better than I.1 AnswerOptical2 months ago
For example, you laid your phone on the bottom of the case. And then placed your face mask on top of it. If you were to put them side by side rather than stacking on on top of the other, would it make any difference?
I ask because you see some pictures of these units being sold where items are just next to one another. In other pictures, you'll see items covering or touching other items. With larger bags, there might be say a sweater on the bottom with a shirt on top of it, partially covering it. And other items, like jewelry, etc on top of these.
So would the UV rays penetrate through the items to disinfect what's underneath or on top? Or would the rays be blocked, even partially by having items stacked on each other? And thus, stacking items would defeat the purpose because the top or underside wouldn't be disinfected.1 AnswerPhysics2 months ago
I'm curious why the the two UV lights appear to emit different colors and make things appear differently. One light has LEDs that emit violet colored light. The other is a glass tube that seems to emit white colored light.
Using a UV invisible ink pen, both UV lights will light up whatever is written or drawn. And if you just shined the violet colored light on yellow, it will appear brownish. With the white colored light, it will appear yellow. And with something coated with blue liquid laundry detergent, the violet colored light illuminates blue while the white colored light illuminates a faint white.
So I'm curious why these 2 UV lights would make things look so different when they're both supposed UVC with the same wavelength.1 AnswerPhysics2 months ago
With so many fakes being sold out there, does this experiment prove this particular one is at least UVC light? For the experiment, a piece of plain white paper and the lens off a big magnifying glass were used. The glass was placed partially over the paper. So one side of the paper was covered and the other was not. Then a UV light source was shined over the whole paper. So there was on both the covered and uncovered portions of the paper.
1) A child's UV invisible ink pen was used. The result was everything looking exactly the same on both sides of the paper. So the color and intensity were exactly the same!
2) A supposed UVC sterilizer wand was used. Here, the side covered by the magnifying glass was significantly dimmer. So there was a huge difference in the color between the covered and uncovered sides. And it appeared the covered side wasn't as bright.
Here is a link with pictures so you can see for yourself what the results were: https://i.postimg.cc/SNLv4mf6/UV-light-test.jpgPhysics3 months ago
Is there any difference in terms of protecting the eyes by wearing a pair of solar eclipse glasses and looking into a UV light vs wearing UV protection glasses? So are they basically the same thing and can be used interchangeably. Or is there a big difference?1 AnswerPhysics3 months ago
With a UVC light bulb or wand, looking directly at the source (the bulb or under side of the wand where the light comes out) is very dangerous to the eyes. But is it also that dangerous if you were to look at the light coming off it indirectly. In other words, looking at the light that's shining on a non-reflective surface? So when you look at the rays emitting out of the source from without looking directly at the source itself, is this as dangerous to one's eyes?
For example, pointing a light wand at something non-reflective and looking at the light hitting that object. Or having a bulb lighting up a room and looking inside the room at the light hitting the carpet or a wall.4 AnswersPhysics3 months ago
There are a whole bunch of these handheld UVC germicidal wands being sold on Amazon, eBay, etc. Is there an inexpensive and simple way for consumers to test whether the light being emitted is really UVC and not UVA or UVB?
For example, if you had a Dosimeter test card that's used in industry, could you put it under the light wand and see whether it changes color? Or would the light output from the wands be too low for it to work?
But other than one of these test cards and an expensive UV light meter, is there something else the average consumer can do to tell if their light wand really does emit UVC light?1 AnswerCorporations3 months ago
I know that hydrophobic sprays provide waterproofing and protection against other liquids. But my question is what, if any, is the difference between various products?
● Scotchguard fabric spray
● Thompson's Water Seal for fabrics
Are they really the same thing with just different brand names? Looking at the cans, they appear to be pretty much the same thing. However, the price differential between them is a few dollars. So I don't want to be penny-wise and pound foolish. Thanks everyone in advance for helping out!2 AnswersPainting8 months ago
I m finding conflicting information and hope you can reconcile. Some sources say to have the larger lens with higher magnification and the smaller eyepiece lens with lower magnification. Other sources say it s the reverse.
To provide a clearer and more detailed image, which is correct? Does it even matter? For example, a large 5X magnifying glass lens with say a 30x jewelers glass.Astronomy & Space12 months ago
I have a mount with an eyepiece adapter to connect the monocular with my phone. The problem is with the moon being very bright against the dark skies. The moon appears just as a bright white spot. I've lowered the exposure, but that only makes everything even darker but still no clarity with details. Daytime is no problem. Any advice would be helpful!6 AnswersAstronomy & Space12 months ago
Both have 60 mm diameter and 6 mm eyepiece but:
1) 600 focal length. So magnification = 100x and f/stop = 10
2) 350 focal length for magnification of 60x. But the f/stop here is 6
My feeling is # 1 because the magnification is better. FYI, the price for each one is pretty close.
What is your feeling given one has better magnification but a lower f/stop?3 AnswersAstronomy & Space1 year ago
I have a 2.4 inch diameter refractor telescope that s working just fine without the 1.5 extender. But when the extender is plugged in, the image upside-down.
FYI, I put the extender in between the tube and angled mirror at first. Then though I might have it setup wrong. So I put then put the extender in between the mirror and eyepiece. Same thing, the image is upside-down.
Without the extender, the image is right-side up. So my guess is the extender if faulty. Am I correct on this?
Second question. Where should the extender, a working on that is, actually go? Does it go before the mirror or in between the mirror and eyepiece?
Thanks everyone for your help!2 AnswersAstronomy & Space1 year ago
If you were to attach a piece of PVC to the front of the telescope to create a wider opening, would that increase the light gathering capability of the scope?
So think of it an inverted lampshade covering a light bulb. Or a camera lens where the opening beyond the lens is split apart and widened to create the effect of a larger opening.
Secondly, would it affect the field of view?5 AnswersAstronomy & Space1 year ago
I have a telescope with a 1.5 extender tube. But when I attach it to the angled mirror piece and insert the eyepiece, the image appears uipside-down. Without the extender, the image is fine So does the extender tube attach before the angled mirror with the eyepiece plugged into the other end of the mirror? The instructions don t say anything about how this piece works.
Second question. With a Barlow lens, would that plug into the angled mirror where the eyepiece normally goes? Or does this come before the mirror? So I don t know if the Barlow works the same as the extender or are they different configurations.
Thanks!3 AnswersAstronomy & Space1 year ago