Recent content by mfel

With regards to TSLA investing (well investing in general) that people here might get a kick out this: https://www.smbc-comics.com/index.php

I just want to add my 2 cents: We installed hydronic heating 17 years ago and absolutely love it. We looked at the Warmboard product, but instead rolled our own system for costs. We put down 1/40" aluminum sheets on subfloor, and then cut 5/8" plywood into 8" strips with bevel, and put down...

(trying hard to not go down the rabbit hole...) Because the company might not be around in 5 or 20 years? Lumber companies are in decline in general because they in the past did NOT balance growth with harvesting. I'm actually currently involved in some land where they want to harvest and the...

I've interacted with some representatives from the big W corp, and I'm pretty sure they aren't really working on "maximize total lumber productivity no matter the time it takes". They tend to harvest as soon as possible, when the logs are just big enough. Humans and especially business (at...

I don't think it is quite that simple. If the goal is to suck maximum CO2 out of the atmosphere at the fastest rate, that is, maximum sequestration per acre per year, I would say in that current forestry practices are probably not ideal. Granted, I am not a forestry or ecology expert, but I do...

Wow, exciting. For me anyways. Someone actually posting link to a Black-Scholes math. I know it well. I don't want hijack the thread, but here's my short anecdotal contribution ( well rant really). I entered Wall Street after graduate school in Applied Physics back in the mid-90's. There...

Yep, speaking from Pacific Northwest experience, water on roadway is the issue. It doesn't have to be much. Consider two things: if you are driving on dry pavement and hit standing puddle, you definitely feel the drag, right? Second, if we assume total tire width is about 1 meter, and the...

A technical question, not a pro/con LIDAR but something I've been wondering about: How do all these systems, LIDAR, radar and ultrasonics, keep from interfering with other vehicles with same? Simplest example, if two cars with same ultrasonics are side by side, what the heck is happening...

I did a very quick try on this a couple of weeks ago with my new X windshield. It does have a very clear triple image for headlights, etc. However, from just a few feet away shining a cheap laser pointer through windshield onto a card I could not detect any multiple images. I was holding...

Another thought: Since it appears that the magnitude of the problem differs from windshield to windshield (see report about how a replacement windshield had much improved behavior), perhaps it is the Model X's unique windshield with the portion tinted. How is that tinting of the upper portion...

Well, turns out I was wrong about autodimming rear view mirrors. They use electrochromic gels for dimming, not specifically diffraction effect. However I do know I see many ghosts above and below at night in the rear view mirror. Not sure what that's about.

An interesting thoughts occurred to me just now. Using only first order physics based off refraction (simple lens kind of stuff), the reflection "direction" (above or below) is purely determined by the angle of windshield. As demonstrated in that diagram, it will only be above original for...

Like vandacca said. Any time light goes across an interface like air/glass or glass/air, there's a slight reflection. Purposeful optics like camera lens and binoculars use all sorts of fancy coatings to reduce that behavior. So if the glass is at an angle, the reflection off the second...