▲ 11 ▼ Chinese ghost radar moves at ‘near-light-speed’ to detect submarines (www.scmp.com) submitted 2 years ago* by yogthos@lemmy.ml to c/technology@lemmy.ml 8 comments fedilink hide all child comments https://archive.is/aC1ym https://www.researching.cn/articles/OJ97a9c4dcc97720f3
[–] queermunist@lemmy.ml 7 points 2 years ago (1 child) ... isn't that just how radar works? A radio emission is sent out, bounces off an object, and then detectors measure the difference? The fact that this works from the sky is definitely new, but I think all radar is light speed by definition. permalink fedilink source hideshow 2 child comments replies: [–] yogthos@lemmy.ml [S] 2 points 2 years ago (1 child) looks like the innovation here is with using ELF spectrum which penetrates seawater permalink fedilink source parent hideshow 2 child comments replies: [–] queermunist@lemmy.ml 5 points 2 years ago* (2 children) I figured something cool was happening to allow them to use radar from the air. So it's not even radar, it's like, ELFdar. Really weird they went for the "lightspeed" angle tho permalink fedilink source parent hideshow 4 child comments replies: [–] yogthos@lemmy.ml [S] 5 points 2 years ago (1 child) for sure, I find most of the time science reporting actually makes it harder to understand what the tech does rather than explain it permalink fedilink source parent hideshow 2 child comments replies: [–] lemmeout@lemm.ee 3 points 2 years ago (1 child) In the spirit of dumbing down the plot to make sure viewers don't turn away, they end up making totally nonsensical (if not misleading) content. permalink fedilink source parent hideshow 2 child comments replies: [–] yogthos@lemmy.ml [S] 2 points 2 years ago I suspect that a lot of the time people doing science reporting have a fairly tenuous grasp on the subject themselves as well. permalink fedilink source parent [–] halykthered@lemmy.ml 1 point 2 years ago (1 child) RF is still RF, the only difference between what they're shooting into the water to detect subs and what you're shooting into your hot pockets is output power and frequency. It's still radio detection and ranging, just at a frequency not typically used for it. Microwave frequencies are used for what one would consider to be typical radar applications, while extremely low frequency would be better suited for communications. permalink fedilink source parent hideshow 2 child comments replies: [–] queermunist@lemmy.ml 1 point 2 years ago* Infrared isn't red, though. Seems like it's worth making a distinction between different frequencies if the way it interacts with matter is different. permalink fedilink source parent
[–] yogthos@lemmy.ml [S] 2 points 2 years ago (1 child) looks like the innovation here is with using ELF spectrum which penetrates seawater permalink fedilink source parent hideshow 2 child comments replies: [–] queermunist@lemmy.ml 5 points 2 years ago* (2 children) I figured something cool was happening to allow them to use radar from the air. So it's not even radar, it's like, ELFdar. Really weird they went for the "lightspeed" angle tho permalink fedilink source parent hideshow 4 child comments replies: [–] yogthos@lemmy.ml [S] 5 points 2 years ago (1 child) for sure, I find most of the time science reporting actually makes it harder to understand what the tech does rather than explain it permalink fedilink source parent hideshow 2 child comments replies: [–] lemmeout@lemm.ee 3 points 2 years ago (1 child) In the spirit of dumbing down the plot to make sure viewers don't turn away, they end up making totally nonsensical (if not misleading) content. permalink fedilink source parent hideshow 2 child comments replies: [–] yogthos@lemmy.ml [S] 2 points 2 years ago I suspect that a lot of the time people doing science reporting have a fairly tenuous grasp on the subject themselves as well. permalink fedilink source parent [–] halykthered@lemmy.ml 1 point 2 years ago (1 child) RF is still RF, the only difference between what they're shooting into the water to detect subs and what you're shooting into your hot pockets is output power and frequency. It's still radio detection and ranging, just at a frequency not typically used for it. Microwave frequencies are used for what one would consider to be typical radar applications, while extremely low frequency would be better suited for communications. permalink fedilink source parent hideshow 2 child comments replies: [–] queermunist@lemmy.ml 1 point 2 years ago* Infrared isn't red, though. Seems like it's worth making a distinction between different frequencies if the way it interacts with matter is different. permalink fedilink source parent
[–] queermunist@lemmy.ml 5 points 2 years ago* (2 children) I figured something cool was happening to allow them to use radar from the air. So it's not even radar, it's like, ELFdar. Really weird they went for the "lightspeed" angle tho permalink fedilink source parent hideshow 4 child comments replies: [–] yogthos@lemmy.ml [S] 5 points 2 years ago (1 child) for sure, I find most of the time science reporting actually makes it harder to understand what the tech does rather than explain it permalink fedilink source parent hideshow 2 child comments replies: [–] lemmeout@lemm.ee 3 points 2 years ago (1 child) In the spirit of dumbing down the plot to make sure viewers don't turn away, they end up making totally nonsensical (if not misleading) content. permalink fedilink source parent hideshow 2 child comments replies: [–] yogthos@lemmy.ml [S] 2 points 2 years ago I suspect that a lot of the time people doing science reporting have a fairly tenuous grasp on the subject themselves as well. permalink fedilink source parent [–] halykthered@lemmy.ml 1 point 2 years ago (1 child) RF is still RF, the only difference between what they're shooting into the water to detect subs and what you're shooting into your hot pockets is output power and frequency. It's still radio detection and ranging, just at a frequency not typically used for it. Microwave frequencies are used for what one would consider to be typical radar applications, while extremely low frequency would be better suited for communications. permalink fedilink source parent hideshow 2 child comments replies: [–] queermunist@lemmy.ml 1 point 2 years ago* Infrared isn't red, though. Seems like it's worth making a distinction between different frequencies if the way it interacts with matter is different. permalink fedilink source parent
[–] yogthos@lemmy.ml [S] 5 points 2 years ago (1 child) for sure, I find most of the time science reporting actually makes it harder to understand what the tech does rather than explain it permalink fedilink source parent hideshow 2 child comments replies: [–] lemmeout@lemm.ee 3 points 2 years ago (1 child) In the spirit of dumbing down the plot to make sure viewers don't turn away, they end up making totally nonsensical (if not misleading) content. permalink fedilink source parent hideshow 2 child comments replies: [–] yogthos@lemmy.ml [S] 2 points 2 years ago I suspect that a lot of the time people doing science reporting have a fairly tenuous grasp on the subject themselves as well. permalink fedilink source parent
[–] lemmeout@lemm.ee 3 points 2 years ago (1 child) In the spirit of dumbing down the plot to make sure viewers don't turn away, they end up making totally nonsensical (if not misleading) content. permalink fedilink source parent hideshow 2 child comments replies: [–] yogthos@lemmy.ml [S] 2 points 2 years ago I suspect that a lot of the time people doing science reporting have a fairly tenuous grasp on the subject themselves as well. permalink fedilink source parent
[–] yogthos@lemmy.ml [S] 2 points 2 years ago I suspect that a lot of the time people doing science reporting have a fairly tenuous grasp on the subject themselves as well. permalink fedilink source parent
[–] halykthered@lemmy.ml 1 point 2 years ago (1 child) RF is still RF, the only difference between what they're shooting into the water to detect subs and what you're shooting into your hot pockets is output power and frequency. It's still radio detection and ranging, just at a frequency not typically used for it. Microwave frequencies are used for what one would consider to be typical radar applications, while extremely low frequency would be better suited for communications. permalink fedilink source parent hideshow 2 child comments replies: [–] queermunist@lemmy.ml 1 point 2 years ago* Infrared isn't red, though. Seems like it's worth making a distinction between different frequencies if the way it interacts with matter is different. permalink fedilink source parent
[–] queermunist@lemmy.ml 1 point 2 years ago* Infrared isn't red, though. Seems like it's worth making a distinction between different frequencies if the way it interacts with matter is different. permalink fedilink source parent
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