Recent content by onix

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Engineering Technologies?

Agreed - you won't get repect from the engineers, and if you want a loosy-goosy know-everything tech degree, go physics. Note that computer engineering (computer architecture, logic gates, digital electronics, automata) is very different from electrical engineering (signal processing...
- onix
- Post #6
- Sep 14, 2005
- Forum: Ask a Technical Professional
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Why do some rechargeable batteries work in MP3 players while others don't?

I think your rechargables cannot deliver enough CURRENT (I), and hence enough POWER (P = I*V), at a their rated voltage (V), whereas NiMH can. A simple way to test is to buy a variable resistor (50 ohms to 5 kohm should be good enough) and hook it up to the battery. As you vary the resistance...
- onix
- Post #9
- Sep 6, 2005
- Forum: Ask a Technical Professional
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Camera Red Eye

This article makes things clearer, but doesn't answer my original question. My eyes (greenish-hazel) are pretty dark. http://en.wikipedia.org/wiki/Red-eye Is it possible for humans to have a "tapetum lucidum"?
- onix
- Post #25
- Sep 5, 2005
- Forum: Ask a Technical Professional
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graphics comparison of low end laptop graphics

Excellent links Conroy9!
- onix
- Post #4
- Aug 27, 2005
- Forum: Laptops
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Jumping

About how much additional vertical should one expect with a running start, instead of off two?
- onix
- Post #9
- Aug 11, 2005
- Forum: Ask a Technical Professional
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Jumping

OK so conservation of energy - but you're not jumping off a spring-board and our leg muscles are not elastic. Also at some point, if I run too fast, I cannot jump very high at all.
- onix
- Post #3
- Aug 9, 2005
- Forum: Ask a Technical Professional
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Jumping

I don't know how many countless dreams I've had about flying like MJ and dunking, but have also wondered about the dynamics. When I was younger I could jump higher off two feet than after a running start. Nowadays, I jump just as high regardless of how. By the way, I get about 30" of vertical...
- onix
- Thread
- Aug 9, 2005
- Replies: 9
- Forum: Ask a Technical Professional
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Latest word in laptop video GPU's?

I have several questions, so let me just list them: o What is the latest word on the future of high performance laptop graphics? oo As a corollary to the former question, is better (in general) to get Intel integrated graphics, or a GPU supplied by a non-motherboard manufacturer? o Why...
- onix
- Thread
- Aug 8, 2005
- Replies: 3
- Forum: Laptops
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Negative Pressure

It is only through a pressure difference that you will have fluid/air transport.
- onix
- Post #2
- Aug 5, 2005
- Forum: Ask a Technical Professional
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Long skis

This past weekend I saw a race advertised as the world's fastest non-motorized sport - speed skiing. They guys were doing 150+ mph on 60 degree slopes. One dude wiped at 151 mph. I noticed the length of their skis weren't the 210+ that a lot of experienced skiers boast, but instead more like...
- onix
- Thread
- Jul 26, 2005
- Replies: 13
- Forum: Ask a Technical Professional
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Camera Red Eye

Axnff- We are curious about the results from your 3 year-old's doctor visit. What is the red-eye reflectivity due to? My mother & I both get red-eye, but my father & brother do not.
- onix
- Post #20
- Jul 19, 2005
- Forum: Ask a Technical Professional
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Long second toe

The gene for a long second toe is dominant, but I've also heard that it is linked to tallness. I haven't found sufficient evidence on google to draw any conclusions. What would Mendel say? Added July 20, 2005: I have enjoyed reading every single post here! Thanks to all you...
- onix
- Thread
- Jul 13, 2005
- Replies: 32
- Forum: Ask a Technical Professional
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Camera Red Eye

Flash photos of me invariably result in red-eye, even in moderate lighting. I have brownish-hazel eyes and I've noticed that some people are more prone to red-eye in flash shots than are others. I also wear contacts, but I've seen red-eye problems in those that don't. The problem seems to be...
- onix
- Thread
- Jul 13, 2005
- Replies: 25
- Forum: Ask a Technical Professional
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super-fast mobile chips that sleep a lot

If it was just a "few" milliseconds I wouldn't have a problem, but it's really like 500 ms, i.e. 1/2 second. And why does my cell phone take so long to hang up. As far as I can tell, it should instantly turn off and discontinue power usage. Maybe it's bad programming. My Palm m505 (now 4...
- onix
- Post #10
- Jun 27, 2005
- Forum: Ask a Technical Professional
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Copper Interconnects For CPU's-How bout Silver?

Sixtyfour's posts up to this point have been mostly correct. I do IC design and gold is often used. In fact a lot of gold wire-bonding is done too, and that conceivably would also be "expensive". You guys have to look at the overall cost. Now aluminum is the traditional metal used. Gold...
- onix
- Post #33
- Jun 25, 2005
- Forum: Ask a Technical Professional

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