Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror
×

Comment Re:Its not the CFL/LED (Score 1) 602

The problem is, we are trying to adapt CFLs to Incandescent sockets.

Not always too well, since the result can be a a bad fit. Sometimes even a lamp which can't fit in the fixture.

The CFLs you're getting have about the cheapest ballasts that can be made in them and the airflow through them is awful. In an ideal setup you'd have these ballasts elsewhere... where they can remain cool.

Which is how "classic" florescent fittings work. With the ballast typically nowhere near the lamp.

Comment Re:Its not the CFL/LED (Score 1) 602

LED is DC, and it needs regulated DC.

LED stands for Light Emitting Diode. So they can be fed AC and illuminate. One way of making a tri-colour LED is to connect a red and a green one in anti-parallel within the same package. Result DC one way red, DC the other way green, AC yellow (actually the illusion of yellow due to presistance of vision).

Comment Re:The DC-10 was killed by poor management. (Score 1) 112

Fundamental problem with DC-10 was the poor management. They made a stupid decision to make the cargo door open outward. Designed a complex locking arrangment using pins to be done by the cargo handlers. If not properly locked, the door flies off.

Outward opening cargo doors are common on widebodied aircraft. N4713U, performing flight UA 811, was a 741. Even though the locking mechanism used by Douglas was different from that of Boeing both contained design flaws.

Added to that the airlines were using some home grown procedure to dismount and remount engines. Recommended process called for removing some 198 bolts. Airliners detached three loading pins on the pylon. In the process damaged the pylon. They had the engine on a fork lift truck while someone shouted directions trying to slide in the loading pin. The mistake was by the airlines. DC-10 paid the price for it.

Here too you can find similar problems with both the DC-10 and B747. American Airlines 191 and El Al 1862

Comment Re:pass the tinfoil (Score 1) 82

Greenwashing is done with signs and advertisements, not with millions of dollars and heavy equipment investments.

The likes of "biofuels" and "renewable" electricity generation can involve vast amounts of money and plant. Yet be useless, even counterproductive, assuming a goal of reducing fossil fuel usage. So the idea that "greenwashing" cannot involve these is false.

Comment Re:Steam to extract oil that shouldn't be... (Score 1) 82

The credible way out of the problem of burning fossil fuels is to replace as many energy sources as possible with renewables (wind, solar, geothermal, hydro, etc.).

Wind and solar are not especially credible energy sources. Except for specific niche applications, possibly excluding this one. Geothermal and hydro require rather specific geography with hydro often being opposed by "greenies". With the most effective and most truely "renewable" option being even more strongly opposed by the "greenies".

Comment Re:bullshit (Score 1) 326

It's usually easy to tell whether a driver involved in an accident was texting and the penalties can be stiff (including manslaughter or vehicular homicide).

Should there actually be special laws along the lines of "vehicular homicide" especially given that they potentially allow someone to literally "get away with murder".

Comment Re:Can we please cann these companies what they ar (Score 1) 288

if you want to save money and take a risk with a cab that doesn't have inspections, why should the government butt in? again, consenting adults not small children that need a nanny to watch over them.

On the other hand there dosn't appear to be much interst in regulating "school runs".

Comment Re:Eat real foods, mostly veg, not too much (Score 1) 291

The anti-salt propaganda has as much basis as the "wisdom" of drinking eight glasses of water a day. It became a thing everyone "knows" is true without questioning if there is any factual support.

Much the same is true of the various versions of "five a day".

Nobody has ever demonstrated a mechanism for how salt intake causes heart disease. All you ever get is a lot of hand waving and vague statistics collected from people who already have advanced CV disease.

Not just with salt, when it comes to CVD. Dosn't help either that many of the people involved have no excuse for not knowing the difference between a lipoprotein and a steroid either.

Comment Re:Talking Point (Score 1) 427

Climate models don't even project 10 years into the future well, they work more on 30 year time scales.

So do those from 1984 do a better job than those form 2004 when it comes to matching what we observe to be the case now? No matter how each group of models compare with the other how well do they do in absolute terms?

Slashdot Top Deals

The biggest difference between time and space is that you can't reuse time. -- Merrick Furst

Working...