4 ms·

LED bulbs is the one that still surprises me. The quality jump and price cliff from the flickery, blindness-inducing early bulbs was very fast.

rhino369 4y ago
Semiconductors have HUGE upfront R&D cost, but marginal costs aren't that bad.
- Scoundreller 4y ago
  Same with PVs
joe-collins 4y ago
I remember buying just a pair of bulbs for my first apartment in 2010 at $20 each, and now they're a dollar or two apiece.
- shapefrog 4y ago
  I remember buying bulbs in 2010 at $20 each - I havent had to buy any since.
prometheon1 4y ago
One of the main reasons for this is research funding and regulation by the European Union. Something similar is probably going to happen with hydrogen production over the next years. (Not as fuel for cars but for industry)
- mrpopo 4y ago
  Mandatory reminder that hydrogen as fuel for cars is an incredible waste of primary energy and will be for a long time. A petrol car engine is inefficient due to constraints (small + no cooling source other than air). An electric engine + battery is extremely efficient (the "downside" is you can't use the wasted energy to heat up the car in winter like an ICE). An electric engine + hydrogen fuel tank brings back inefficiency, and you can't even reuse that wasted energy because most of this waste is electrolysis.
  - samtho 4y ago
    On the other hand, you can refill a pressurized hydrogen tank in seconds. Electricity itself is merely a mode of energy transmission. Energy storage has and will continue to be a huge innovation area as the current means of battery charging are either slow or low capacity. We’re getting really good at getting energy from the sun, and excess energy not consumed is wasted, so why not make hydrogen? Heck, why not have fuel stations in the middle of nowhere have a well (for water extraction) and an array of solar panels so the station can produce its own product to sell? I can see a future where you can opt for a hydrogen fuel cell EV rather than a battery powered one. Efficiently using the hydrogen will be a non-issue if we are able to trivially produce a vast abundance of it. It’s hard to say that an EV is just as good (for the consumer) as an ICE engine if I am taking a road trip and one of many fill-ups makes me wait for hours. There are these uncommon cars that opponents usually cite and are sometimes unfairly dismissed. I say this because we can and will make EV technology better and cheaper and I’m willing to bet money that hydrogen fuel cell in lieu of batteries will become a thing.
    - tedk-42 4y ago
      You think you have two good points (refill time + H2 generation from water) but really you have nothing. Hydrogen might fill a gap to replace large vehicles like buses or trucks but not passenger vehicles.
      - samtho 4y ago
        Those are great points, actually and your comment provides so little detail that I begin to question the intentions behind it. We have yet to design many vehicles around a hydrogen fuel cell and we have yet to really realize it’s full potential as a power source, dismissing it on these grounds is simply short-signed thinking. We can extract this resource from a very abundant resource, water, which is huge. With only energy (from the grid or a micro-grid) and water as inputs, you can produce a substance that is able to store energy for later use who’s only byproduct is water.
    - mrpopo 4y ago
hoseja 4y ago
What surprises me is how they managed to make them artificially degrade anyway through terrible cooling. We could have truly eternal LEDs for only minor increase in material cost but no, they have to overheat and burn out to secure profits for Philips.

rhino369 4y ago

Semiconductors have HUGE upfront R&D cost, but marginal costs aren't that bad.

Scoundreller 4y ago
Same with PVs

joe-collins 4y ago

I remember buying just a pair of bulbs for my first apartment in 2010 at $20 each, and now they're a dollar or two apiece.

shapefrog 4y ago
I remember buying bulbs in 2010 at $20 each - I havent had to buy any since.

prometheon1 4y ago

One of the main reasons for this is research funding and regulation by the European Union. Something similar is probably going to happen with hydrogen production over the next years. (Not as fuel for cars but for industry)

mrpopo 4y ago
Mandatory reminder that hydrogen as fuel for cars is an incredible waste of primary energy and will be for a long time. A petrol car engine is inefficient due to constraints (small + no cooling source other than air). An electric engine + battery is extremely efficient (the "downside" is you can't use the wasted energy to heat up the car in winter like an ICE). An electric engine + hydrogen fuel tank brings back inefficiency, and you can't even reuse that wasted energy because most of this waste is electrolysis.
- samtho 4y ago
  On the other hand, you can refill a pressurized hydrogen tank in seconds. Electricity itself is merely a mode of energy transmission. Energy storage has and will continue to be a huge innovation area as the current means of battery charging are either slow or low capacity. We’re getting really good at getting energy from the sun, and excess energy not consumed is wasted, so why not make hydrogen? Heck, why not have fuel stations in the middle of nowhere have a well (for water extraction) and an array of solar panels so the station can produce its own product to sell? I can see a future where you can opt for a hydrogen fuel cell EV rather than a battery powered one. Efficiently using the hydrogen will be a non-issue if we are able to trivially produce a vast abundance of it. It’s hard to say that an EV is just as good (for the consumer) as an ICE engine if I am taking a road trip and one of many fill-ups makes me wait for hours. There are these uncommon cars that opponents usually cite and are sometimes unfairly dismissed. I say this because we can and will make EV technology better and cheaper and I’m willing to bet money that hydrogen fuel cell in lieu of batteries will become a thing.
  - tedk-42 4y ago
    You think you have two good points (refill time + H2 generation from water) but really you have nothing. Hydrogen might fill a gap to replace large vehicles like buses or trucks but not passenger vehicles.
    - samtho 4y ago
      Those are great points, actually and your comment provides so little detail that I begin to question the intentions behind it. We have yet to design many vehicles around a hydrogen fuel cell and we have yet to really realize it’s full potential as a power source, dismissing it on these grounds is simply short-signed thinking. We can extract this resource from a very abundant resource, water, which is huge. With only energy (from the grid or a micro-grid) and water as inputs, you can produce a substance that is able to store energy for later use who’s only byproduct is water.
  - mrpopo 4y ago

hoseja 4y ago

What surprises me is how they managed to make them artificially degrade anyway through terrible cooling. We could have truly eternal LEDs for only minor increase in material cost but no, they have to overheat and burn out to secure profits for Philips.