If only I had mod points - you hit the nail on the head. Lack of firearm safety EDUCATION is the biggest cause of accidental firearm deaths. Most gun illiterate people don't know they're gun illiterate - they think they know all they need to from watching TV (where some of the most egregious firearm-handling mistakes are taught to our youth).
It's disgraceful that the general public is so eager to watch (and let their kids watch) gun violence on TV, but is so unwilling to actually teach gun safety to it's youth.
Then there are objects built for the purpose to kill, and nothing else.
Don't pontificate from a position of ignorance - you clearly have no experience with firearms and their myriad of uses. I have fired well over 20,000 rounds through various firearms, and NOT ONCE has a single person been injured, much less been killed, from it.
I did have a mighty enjoyable time poking holes in defenseless paper, however.
And I suppose this UCSD Lecturer would also support an app "to allow people to 'Geolocate Dangerous Liberal Socialists'" that threaten the Constitution?
Then this discussion might be the impetus for you to switch on and have a listen! There's still an awful lot of interesting-tending-to-weird stuff on HF these days. If you have an SSB-compatible receiver, you can listen in on amateur radio folks working the world. The US version of the bands we use are listed here in several formats - they're mostly representative of ham usage worldwide.
Don't forget the RF-transmitting tire tags that were mandated by the NHTSA due to the Ford/Firestone 'problem'. These tags transmit a unique code that is associated with your vehicle ID Number (VIN) that is recorded when you buy your vehicle, when it's inspected, when you get new tires, when anyone peeps thru your windshield, etc.
There are stories of it been used at the border to catch people that try to do funny things with cars in Mexico - not sure what.
The VIN mapping is very real - the alleged purpose of TPMS sensors if to be able to alert owners of defective tires - that couldn't happen without having a mapping of Owners VINs TPMS sensor IDs.
Unless the model plane is the size of a 747 or the explosive is anit-matter, how is that a "... state-threatening act of violence." Is Germany in such dire straits that a single model aircraft can topple a whole country?
Unless we're talking about the same people, there already are TCP servers for the RTLSDR-based receivers. There are a few mentioned on this page, particularly rtl_tcp that comes with the rtlsdr software.
rtl_tcp
Example:
rtl_tcp -a 10.0.0.2 [-p listen port (default: 1234)] Found 1 device(s). Found Elonics E4000 tuner Using Generic RTL2832U (e.g. hama nano) Tuned to 100000000 Hz. listening... Use the device argument 'rtl_tcp=10.0.0.2:1234' in OsmoSDR (gr-osmosdr) source to receive samples in GRC and control rtl_tcp parameters (frequency, gain,...).
use the rtl_tcp=... device argument in gr-osmosdr source to receive the samples in GRC and control the rtl settings remotely.
This application has been successfully crosscompiled for ARM and MIPS devices and is providing IQ data in a networked ADS-B setup at a rate of 2.4MSps. The gr-osmosdr source is being used together with an optimized gr-air-modes version (see Known Apps below). It is also available as a package in OpenWRT.
I wait anxiously for your app to support rtlsdr - thanks!
I like the looks of your SdrDx app - how cool! I'm into SDR in a small way. I'm working on a TV dongle-based 6m propagation alert system. I currently have an RTLSDR-based dongle uploading ADS-B data to flightradar24.com.
I started in electronics just as tubes were being supplanted by solid state, so I know the basics, the variety, and some of the quirks but not enough to build anything tube-based running close to the edge of the envelope. I do recall someone I know running a HUGE 160m amplifier that had about 10kV on the plate. According to my physics prof at the time we were likely getting some soft X-rays off that thing. The guts of its single enormous tube glowed cherry red after a few seconds of CW. The 220V power supply had a variac with a knob the size and shape of the one you see on submarine doors, and the whole thing was the size of a 'fridge.
If you've learned about bipolar transistors and MOSFET's, you've learned about tubes as well. FETs are very similar to tubes in their characteristic curves - both are considered voltage-driven devices. Bipolar transistors, on the other hand, are current-driven devices.
I'm glad to hear a ham helped you out - we're like that!
That's because if a Waze user is driving by as an accident happens or just after, they can mark it on the map.
You know, that is my major complaint with Waze, unless I haven't figured this out. If I drive past an accident, or more recently have a near-tornado drop trees across a bunch of roads, I CAN'T MARK THE EXACT SPOT OF THE INCIDENT!
Dear Waze, All I want is to be able to tap the map on the exact spot of an issue and add an incident report. I DO NOT EVER WANT YOU TO USE WHERE MY CAR IS WHEN I TAP THE SCREEN - the problem is NEVER there unless I'm in the crash, and then Waze is the last thing I'd be interested in using.
But when the AC comes back on, it has to work harder because now the room is warmer. Unless you have a very intelligent multi-speed compressor, AC units have two settings: on and off - there is no "works harder". Naturally it will have to work longer, but not harder.
No energy has been saved in the long run, all thats happened is a tall thin peak of energy consumption has been flattened and made wider. That is EXACTLY the point of the exercise! The generating plants can only generate X GW of power - any demand over that number results in brown/blackouts. It can generate X GW all day long but not a Watt more. If all points on the graph are under X, everyone is happy.
My UPSes log an average of 3-4 of them per day, and did so before too, when I lived in a different town.
My guess is you're seeing is sag/surge caused by the switching on/off of large inductive loads within your premises, which is perfectly normal. Your UPS is probably set to be overly pessimistic with regard to the instantaneous line voltage - most can be set for voltages ranging from 85 - 145V for switchover on under/over voltage. It is normal to see sags or surges that low/high, but they usually only last for a cycle or so. Your UPS is likely not considering the duration of the event, ans switches over unnecessarily.
That version of a Thorium reactor is broken because it was just a rehash of existing reactors. Read up on Liquid Fluoride Thorium Reactors to see what a state-of-the-art reactor can be. It solves MANY of the existing problem with solid fuel reactors.
If this article is true, then just by looking at the numbers we can assume they're keeping a lot more than metadata. Their new facility in Utah is alleged to have a yottabyte of storage. That 10^24 bytes.
For phone calls, they claim they're storing the numbers involved, location data, and duration of call. That's about 32 bytes for both phone numbers, 240 bytes for 2 addresses (lat/lon would be substantially less), and 4 bytes for the duration. That's a total of 276 bytes per row. There are 300x10^6 people in the US (one end of each call must be in the US after all), and there are 86,400 seconds in a day. If every single person in the US made an international call every second of the day, that would only add up to 7.154 PB/day of data - that's 7.154 x 10^15 bytes. A yottabyte could store 382+ THOUSAND years of phone data.
If we consider email (metadata only), 2 email addresses are 128 bytes, subject is another 128 bytes. If we round up to the 276 bytes for phone calls, the result is the same - 382,000+ years of storage.
If we think about actual voice data, a typical phonecall consumes 8kB/sec (at least a POTS line does). To record every US citizen making 24 hour per day international calls,(300x10^6 24 hour phone calls), you'd need 2.0736x10^17 bytes/day, or 207 PB/day. A yottabyte is almost 50,000 years of storage.
You realize that the "Presidential Alerts" are for things like imminent nuclear attack and other such "kiss your ass goodbye" national moments?
Those sound like exactly the type of thing I do not want to know about beforehand. I'd rather go peacefully unaware than screaming in fear and anticipation.
Your RON numbers seem to match up to US fuels like this, according to this table:
RON 95 = US AKI 90-91 RON 98 = US AKI 93-94 RON 106 = US AKI 94-96
At least in my state, typical pump gas is offered in 3 grades: AKI 87, AKI 89, and AKI 92. Other states offer other octane ratings, but the AKI is always (RON+MON)/2.
I must be missing something - that graph seems to indicate the density levels off at 12 mAh/g, not 1200. Also, it's confusing that they're using an absolute unit for capacity but claim it's been 'normalized to carbon' in the caption. Shouldn't the capacity axis unit be a percentage of carbon's capacity?
His math is not correct - 175g is for a 30Ah, 7-cell 14.8-ishV nominal battery. That's 23x the capacity of your battery with only a 25g (16%) increase in mass.
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If only I had mod points - you hit the nail on the head. Lack of firearm safety EDUCATION is the biggest cause of accidental firearm deaths. Most gun illiterate people don't know they're gun illiterate - they think they know all they need to from watching TV (where some of the most egregious firearm-handling mistakes are taught to our youth).
It's disgraceful that the general public is so eager to watch (and let their kids watch) gun violence on TV, but is so unwilling to actually teach gun safety to it's youth.
Then there are objects built for the purpose to kill, and nothing else.
Don't pontificate from a position of ignorance - you clearly have no experience with firearms and their myriad of uses. I have fired well over 20,000 rounds through various firearms, and NOT ONCE has a single person been injured, much less been killed, from it.
I did have a mighty enjoyable time poking holes in defenseless paper, however.
Us Liberal Socialists take that phrase "I may not agree with what you say, but I will defend to the death your right to say it" pretty seriously.
Are those the same Liberal Socialists that created the very concept of 'Politically Correct' speech?
I thought so.
And I suppose this UCSD Lecturer would also support an app "to allow people to 'Geolocate Dangerous Liberal Socialists'" that threaten the Constitution?
I didn't think so.
Then this discussion might be the impetus for you to switch on and have a listen! There's still an awful lot of interesting-tending-to-weird stuff on HF these days. If you have an SSB-compatible receiver, you can listen in on amateur radio folks working the world. The US version of the bands we use are listed here in several formats - they're mostly representative of ham usage worldwide.
I'm fairly certain that CHU has moved from 7333 kHz to 7850 kHz. It also transmits on 3330 kHz and 14670 kHz.
WWV and WWVH also have digital-compatible subcarrier signal formats, BTW.
You're not too far off the mark. Phobos and Deimos were named after fear and dread, respectively.
Don't forget the RF-transmitting tire tags that were mandated by the NHTSA due to the Ford/Firestone 'problem'. These tags transmit a unique code that is associated with your vehicle ID Number (VIN) that is recorded when you buy your vehicle, when it's inspected, when you get new tires, when anyone peeps thru your windshield, etc.
There are stories of it been used at the border to catch people that try to do funny things with cars in Mexico - not sure what.
The VIN mapping is very real - the alleged purpose of TPMS sensors if to be able to alert owners of defective tires - that couldn't happen without having a mapping of Owners VINs TPMS sensor IDs.
...state-threatening act of violence.
Unless the model plane is the size of a 747 or the explosive is anit-matter, how is that a "... state-threatening act of violence." Is Germany in such dire straits that a single model aircraft can topple a whole country?
Unless we're talking about the same people, there already are TCP servers for the RTLSDR-based receivers. There are a few mentioned on this page, particularly rtl_tcp that comes with the rtlsdr software.
rtl_tcp
Example:
rtl_tcp -a 10.0.0.2 [-p listen port (default: 1234)] ...).
Found 1 device(s).
Found Elonics E4000 tuner
Using Generic RTL2832U (e.g. hama nano)
Tuned to 100000000 Hz.
listening...
Use the device argument 'rtl_tcp=10.0.0.2:1234' in OsmoSDR (gr-osmosdr) source
to receive samples in GRC and control rtl_tcp parameters (frequency, gain,
use the rtl_tcp=... device argument in gr-osmosdr source to receive the samples in GRC and control the rtl settings remotely.
This application has been successfully crosscompiled for ARM and MIPS devices and is providing IQ data in a networked ADS-B setup at a rate of 2.4MSps. The gr-osmosdr source is being used together with an optimized gr-air-modes version (see Known Apps below). It is also available as a package in OpenWRT.
I wait anxiously for your app to support rtlsdr - thanks!
Try going through customs wearing a keffiyeh or dastar.
Wearing a disk drive around your neck is bound to raise suspicions.
I like the looks of your SdrDx app - how cool! I'm into SDR in a small way. I'm working on a TV dongle-based 6m propagation alert system. I currently have an RTLSDR-based dongle uploading ADS-B data to flightradar24.com.
I started in electronics just as tubes were being supplanted by solid state, so I know the basics, the variety, and some of the quirks but not enough to build anything tube-based running close to the edge of the envelope. I do recall someone I know running a HUGE 160m amplifier that had about 10kV on the plate. According to my physics prof at the time we were likely getting some soft X-rays off that thing. The guts of its single enormous tube glowed cherry red after a few seconds of CW. The 220V power supply had a variac with a knob the size and shape of the one you see on submarine doors, and the whole thing was the size of a 'fridge.
My favorite tube was the cats-eye modulation indicator.
I checked my log, but we haven't worked each other. Hope to see you on the bands! 73 de k4det
If you've learned about bipolar transistors and MOSFET's, you've learned about tubes as well. FETs are very similar to tubes in their characteristic curves - both are considered voltage-driven devices. Bipolar transistors, on the other hand, are current-driven devices.
I'm glad to hear a ham helped you out - we're like that!
That's because if a Waze user is driving by as an accident happens or just after, they can mark it on the map.
You know, that is my major complaint with Waze, unless I haven't figured this out. If I drive past an accident, or more recently have a near-tornado drop trees across a bunch of roads, I CAN'T MARK THE EXACT SPOT OF THE INCIDENT!
Dear Waze, All I want is to be able to tap the map on the exact spot of an issue and add an incident report. I DO NOT EVER WANT YOU TO USE WHERE MY CAR IS WHEN I TAP THE SCREEN - the problem is NEVER there unless I'm in the crash, and then Waze is the last thing I'd be interested in using.
So if someone out there knows how, please mark the bridge on Greenwood Road over the Chickahominy River at the Hanover/Henrico County VA line as being closed until at least 6/30.
But when the AC comes back on, it has to work harder because now the room is warmer.
Unless you have a very intelligent multi-speed compressor, AC units have two settings: on and off - there is no "works harder". Naturally it will have to work longer, but not harder.
No energy has been saved in the long run, all thats happened is a tall thin peak of energy consumption has been flattened and made wider.
That is EXACTLY the point of the exercise! The generating plants can only generate X GW of power - any demand over that number results in brown/blackouts. It can generate X GW all day long but not a Watt more. If all points on the graph are under X, everyone is happy.
My UPSes log an average of 3-4 of them per day, and did so before too, when I lived in a different town.
My guess is you're seeing is sag/surge caused by the switching on/off of large inductive loads within your premises, which is perfectly normal. Your UPS is probably set to be overly pessimistic with regard to the instantaneous line voltage - most can be set for voltages ranging from 85 - 145V for switchover on under/over voltage. It is normal to see sags or surges that low/high, but they usually only last for a cycle or so. Your UPS is likely not considering the duration of the event, ans switches over unnecessarily.
That version of a Thorium reactor is broken because it was just a rehash of existing reactors. Read up on Liquid Fluoride Thorium Reactors to see what a state-of-the-art reactor can be. It solves MANY of the existing problem with solid fuel reactors.
'I already ate'
That grates my nerves as well, and I'm purebred American mutt. I would allow "I've eaten", but not "I already ate". That just reeks of ignorant hick.
Here's a nickel, kid, go buy yourself a better OS.
Here's the best part - after 'buying' that better OS, you'll still have the nickel!
If this article is true, then just by looking at the numbers we can assume they're keeping a lot more than metadata. Their new facility in Utah is alleged to have a yottabyte of storage. That 10^24 bytes.
For phone calls, they claim they're storing the numbers involved, location data, and duration of call. That's about 32 bytes for both phone numbers, 240 bytes for 2 addresses (lat/lon would be substantially less), and 4 bytes for the duration. That's a total of 276 bytes per row. There are 300x10^6 people in the US (one end of each call must be in the US after all), and there are 86,400 seconds in a day. If every single person in the US made an international call every second of the day, that would only add up to 7.154 PB/day of data - that's 7.154 x 10^15 bytes. A yottabyte could store 382+ THOUSAND years of phone data.
If we consider email (metadata only), 2 email addresses are 128 bytes, subject is another 128 bytes. If we round up to the 276 bytes for phone calls, the result is the same - 382,000+ years of storage.
If we think about actual voice data, a typical phonecall consumes 8kB/sec (at least a POTS line does). To record every US citizen making 24 hour per day international calls,(300x10^6 24 hour phone calls), you'd need 2.0736x10^17 bytes/day, or 207 PB/day. A yottabyte is almost 50,000 years of storage.
It looks to me like something doesn't add up.
You realize that the "Presidential Alerts" are for things like imminent nuclear attack and other such "kiss your ass goodbye" national moments?
Those sound like exactly the type of thing I do not want to know about beforehand. I'd rather go peacefully unaware than screaming in fear and anticipation.
Your RON numbers seem to match up to US fuels like this, according to this table:
RON 95 = US AKI 90-91
RON 98 = US AKI 93-94
RON 106 = US AKI 94-96
At least in my state, typical pump gas is offered in 3 grades: AKI 87, AKI 89, and AKI 92. Other states offer other octane ratings, but the AKI is always (RON+MON)/2.
The one that gets me is that there are spin-1/2 particles with symmetries that are only apparent after > 360 degrees of 'rotation'. Blows my mind.
I must be missing something - that graph seems to indicate the density levels off at 12 mAh/g, not 1200. Also, it's confusing that they're using an absolute unit for capacity but claim it's been 'normalized to carbon' in the caption. Shouldn't the capacity axis unit be a percentage of carbon's capacity?
His math is not correct - 175g is for a 30Ah, 7-cell 14.8-ishV nominal battery. That's 23x the capacity of your battery with only a 25g (16%) increase in mass.