Questions
Answered properly.
Is this a room-temperature superconductor?
No — and be sceptical of anyone selling you one. YBCO is a high-temperature superconductor, a term of art meaning high relative to conventional superconductors that need liquid helium at 4 K. YBCO’s critical temperature is 92 K, or −181 °C. You reach that with liquid nitrogen at 77 K, which is inexpensive and available almost everywhere. That is the actual breakthrough: no helium, no cryostat, no specialist facility.
How long does levitation last per cooling?
Between three and fifteen minutes, depending on the kit. The Economy levitator sits at the lower end; the Extended Duration Levitators are engineered with heavier thermal insulation for long demonstrations. Re-cooling takes under a minute.
Is liquid nitrogen safe around students?
Yes, with basic precautions — it is non-toxic and non-flammable. You need cryogenic gloves, eye protection, a ventilated room, and a vacuum dewar rather than a sealed container. We supply written safety protocols and a risk-assessment template you can hand straight to a school safety officer. See the full guide.
Which kit suits a classroom of thirty?
The Ultimate Classroom Kit at $5,799 is built for exactly that — two round tracks and eight handheld magnetic devices, so students work in small groups instead of queueing. On a smaller budget, several Economy kits at $139 each will put more hands on the physics than one expensive levitator will.
Can we pay by purchase order?
Yes. We accept POs, issue formal quotations and invoice net-30. W-8BEN-E, VAT and EIN documentation on request, with export paperwork for international institutions. Request a quote.
Do you ship internationally, and how quickly?
Worldwide, and most items ship within one to three days. Superconductors travel warm and dry — there is no cryogenic shipping involved, since you supply the liquid nitrogen at your end.
Can these be built into a university physics curriculum?
They already are, in both undergraduate and graduate programmes. The 4-point Tc setup produces genuine resistance-versus-temperature data over USB, so it functions as a quantitative laboratory exercise rather than only a demonstration. Setup guides, experiment protocols and technical documentation are included.
Still not answered?
Email us and a physicist replies — usually the same day, and always someone who has actually run the demo.
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