디지털전류계, 전압계, 전원장치, 광전관장치 등이 내장되어 있고3색필터, 기준광이 외부에 설치 된다. 전원 공급기의 전압은 0~10V까지 자유롭게 조절되고 전류계는 -199.9㎂-~0~-199.9㎂의 범위가 측정된다.
광전효과를 이용해 플랑크의 상수를 증명하는 기기. 광전관을 이용하여 빛에너지를 전류로 바꾸는 기기이며 금속면에 입사시키는 빛의 세기를 증가시키면 방출되는 전자의 수는 증가되나 전자의 속도는 단지 입사시키는 빛의 진동수 V에만 관계한다. 입사광의 진동수가 한계의 값 이하가 되면 아무리 강한 빛이 입사돼도 전자가 방출되지 않는다.
We accept the following forms of payment: - Credit Card - Visa - MasterCard - American Express - Discover - PayPal
Shipping
Shipping Method : Parcel Service
Shipping Area : A Region.
Shipping Cost : International Shipping Fee
Shipping Time : 4 - 7 days
Please take into consideration that some products may take additional time for delivery and processing. Important: Your order is shipped once your payment has been cleared. Please contact our customer service center if you would like to request an exchange or return on your order.
- Customs and Duties
The recipient will be held responsible for international shipments which may be subject to import duties and taxes. Please be advised that these charges are levied by the destination country and we do not have control over them. In the case that the recipient refuses to receive the parcel, the order will be returned to Korea and will not be re-shipped. Relevant expenses (round-trip shipping, customs, etc.) will be deducted from the refund.
Returns & Exchanges
1. Address for returns and exchanges: - [110-034] 서울 종로구 창성동 131 3층
2. Requirements:
Please take into consideration that we only accept qualifying returns but not exchanges. Refunds are issued once the returned products clear our inspection.
1) An item is eligible for cancellation if: -you posted a Return request within 24 hours of payment and your order is still under “Pending” status (if your order is under “Preparing Shipment” status, please contact our customer service center) or -the order is delayed for more than 10 days since payment and you have not received any notification regarding the delay; or -the ordered item is out of stock.
2) We accept return(s) if:
-you receive a product different from your order; or
-you receive a defective product.
**Return Instructions
(1) Post a return request on our Return forum within three days of receipt. You are required to attach the photos of the received product(s) and include the item code, the order number, and the reason for the return.
(2) A customer service representative will be in contact to assist you by email or phone.
(3) Items returned must be in their original condition, which includes tags and any packaging. Also, you need to include a note of your order number, name, and user ID.
*Please be advised that returns are accepted ONLY IF you followed the instructions above and your return request has been approved by our staff. Returns that are shipped to us without any prior consent are not accepted.
*Please note that EVEN the defective/incorrect item(s) must be returned with all of the tags and labels intact. The item(s) must be sent in their original packaging and unworn.
*Please include all contents of the original package and free gifts (if applicable) in your return packaging.
* Shipping fee for any return caused by our fault will be paid by the company. However, if EMS’ cash on delivery is not possible then you can scan the return receipt and either mail it with the item to return or post an image of it on the forum. The shipping fee will be refunded once the returned item has arrived.
3) We do not accept return(s) if:
-you are returning the items just because you changed your mind (on size, color, etc.) -you are returning shoes, bags, or any other accessories -the products are damaged due to your mishandling -your return request is not approved by our staff
The following items are not considered defective:
* Items that are originally manufactured without tags or labels * Items with creases that may have been made while shipping * Items with unsatisfactory/incomplete finish due to mass production
4) If there is a missing item from your order:
*Contact our customer service center by phone or by forum (if you cannot reach us by phone) within 1 day of delivery. *Please keep all contents of the original package including packaging material (boxes, plastic bags etc.) with you until you are instructed otherwise.
Please note that we may not be able to process the refund for your missing item if you lose or damage any packaging material.
Product Inquiry
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