\uc5f4\uc804\ud1f4 vs \uc2e4\ub9ac\ucf58 \uc77c\uc0ac\uacc4: \uc7a5\ub2e8\uc810<\/h2>\n\n\n\n \uc13c\uc11c \uc6d0\ub9ac\uc5d0\uc11c \uc2e4\uc81c \uc218\ud589\ud574\uc57c \ud560 \uc791\uc5c5\uc73c\ub85c \ub118\uc5b4\uac00\uba74 \ucc28\uc774\ub97c \ud310\ub2e8\ud558\uae30\uac00 \ub354 \uc27d\uc2b5\ub2c8\ub2e4. \uc2e4\uc81c\ub85c \uc5b4\ub290 \uae30\uc220\ub3c4 \ubaa8\ub4e0 \ubaa8\ub2c8\ud130\ub9c1 \uc2dc\uc2a4\ud15c\uc5d0 \uc801\ud569\ud558\uc9c0\ub294 \uc54a\uc2b5\ub2c8\ub2e4. \uc5f4\uc804\ud1f4\uc2dd\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \uad11\ub300\uc5ed \ubcf5\uc0ac \ub370\uc774\ud130\uc640 \uc7a5\uae30 \uce21\uc815\uc774 \uc6b0\uc120\uc21c\uc704\uc77c \ub54c \ub354 \ud569\ub9ac\uc801\uc778 \ubc18\uba74, \uc2e4\ub9ac\ucf58 \uc13c\uc11c\ub294 \ube60\ub978 \uc751\ub2f5, \uc18c\ud615 \uc124\uce58 \ubc0f \ubc30\ud3ec \ube44\uc6a9\uc774 \ub354 \uc911\uc694\ud560 \ub54c \ub354 \uc2e4\uc6a9\uc801\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc5f4\uc804\ud1f4\uc2dd: \uc7a5\uc810\uc774 \uc788\ub294 \uacbd\uc6b0<\/h3>\n\n\n\n \uc5f4\uc804\ud1f4\uc2dd \uc77c\uc0ac\uacc4\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc804\uc6a9 \ud0dc\uc591 \ubcf5\uc0ac \uae30\uae30\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ub4e4\uc5b4\uc624\ub294 \ud0dc\uc591 \uc2a4\ud399\ud2b8\ub7fc\uc758 \ub113\uc740 \ubd80\ubd84\uc744 \ud3ec\ucc29\ud558\uace0 \uc5f0\uc18d \uc77c\uc0ac\ub7c9 \ub370\uc774\ud130\ub97c \uc81c\uacf5\ud558\ub3c4\ub85d \uc124\uacc4\ub418\uc5c8\uc73c\uba70, \uc774 \ub54c\ubb38\uc5d0 \uae30\uc0c1 \uad00\uce21\uc18c, \ud0dc\uc591 \uc790\uc6d0 \uce21\uc815 \uc2dc\uc2a4\ud15c, \uc5f0\uad6c \uc124\ube44 \ubc0f PV \ubaa8\ub2c8\ud130\ub9c1 \uc7a5\ube44\uc5d0\uc11c \ud754\ud788 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
\uadf8 \uac15\uc810\uc740 \ubcc0\ud654\ud558\ub294 \ud587\ube5b \uc870\uac74 \uc804\ubc18\uc5d0 \uac78\uce5c \uc77c\uad00\uc131\uc785\ub2c8\ub2e4. \ubaa9\uc801\uc774 \uc7a5\uae30 \ubcf5\uc0ac \uae30\ub85d\uc744 \uad6c\ucd95\ud558\uac70\ub098 \ubcf4\ub2e4 \uc0c1\uc138\ud55c \ud0dc\uc591 \ubd84\uc11d\uc744 \uc704\ud574 \uc77c\uc0ac\ub7c9 \ub370\uc774\ud130\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774\ub77c\uba74, \uc5f4\uc804\ud1f4\uc758 \ub354 \ub113\uc740 \uc751\ub2f5 \ubc94\uc704\ub294 \uc885\uc885 \ucd94\uac00 \ube44\uc6a9\uc744 \uac10\uc218\ud560 \uac00\uce58\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc808\ucda9\uc810\uc740 \uba85\ud655\ud569\ub2c8\ub2e4: \uc5f4 \uac80\ucd9c\uc740 \ubc18\uc751\ud558\ub294 \ub370 \ub354 \uc624\ub798 \uac78\ub9ac\uace0, \uace0\uc131\ub2a5 \uae30\uae30\ub294 \ub354 \uc138\uc2ec\ud55c \uad50\uc815\uc774 \ud544\uc694\ud558\uba70 \uc77c\ubc18\uc801\uc73c\ub85c \ube44\uc6a9\uc774 \ub354 \ub9ce\uc774 \ub4ed\ub2c8\ub2e4.<\/p>.<\/p>\n\n\n\n
\ubcc0\ud654\ud558\ub294 \ud587\ube5b \uc870\uac74\uc5d0\uc11c\ub3c4 \uc77c\uad00\uc131\uc744 \uc720\uc9c0\ud558\ub294 \uac83\uc774 \uac15\uc810\uc785\ub2c8\ub2e4. \uc7a5\uae30\uc801\uc778 \ubcf5\uc0ac \uae30\ub85d\uc744 \uad6c\ucd95\ud558\uac70\ub098 \ubcf4\ub2e4 \uc0c1\uc138\ud55c \ud0dc\uc591 \ubd84\uc11d\uc744 \uc704\ud574 \uc77c\uc0ac\ub7c9 \ub370\uc774\ud130\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ubaa9\uc801\uc774\ub77c\uba74, \uc5f4\uc804\ud1f4\uc758 \ub354 \ub113\uc740 \uc751\ub2f5 \ubc94\uc704\ub294 \ucd94\uac00 \ube44\uc6a9\uc744 \uc9c0\ubd88\ud560 \uac00\uce58\uac00 \uc788\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \uc808\ucda9\uc810\uc740 \uba85\ud655\ud569\ub2c8\ub2e4. \uc5f4 \uac10\uc9c0 \ubc29\uc2dd\uc740 \ubc18\uc751\ud558\ub294 \ub370 \uc2dc\uac04\uc774 \ub354 \uc624\ub798 \uac78\ub9ac\uace0, \uace0\uc131\ub2a5 \uae30\uae30\ub294 \ub354 \uc138\uc2ec\ud55c \uad50\uc815\uc774 \ud544\uc694\ud558\uba70 \uc77c\ubc18\uc801\uc73c\ub85c \ube44\uc6a9\uc774 \ub354 \ub9ce\uc774 \ub4ed\ub2c8\ub2e4.<\/h3>\n\n\n\n Silicon: Where It Has an Advantage.<\/p>\n\n\n\n
\uc2e4\ub9ac\ucf58: \uc7a5\uc810\uc774 \uc788\ub294 \ubd80\ubd84.<\/p>\n\n\n\n\nA silicon pyranometer is a more compact type of solar radiation sensor built around a silicon photodiode. It responds directly to incoming light, so it can detect rapid changes in irradiance without waiting for a thermal element to heat up. This makes the technology useful where sensors need to be small, responsive, and easy to deploy at multiple locations.<\/h2>\n\n\n\n \uc2e4\ub9ac\ucf58 \uc77c\uc0ac\uacc4\ub294 \uc2e4\ub9ac\ucf58 \ud3ec\ud1a0\ub2e4\uc774\uc624\ub4dc\ub97c \uae30\ubc18\uc73c\ub85c \ub9cc\ub4e4\uc5b4\uc9c4 \ub354 \uc18c\ud615\ud654\ub41c \uc720\ud615\uc758 \ud0dc\uc591 \ubcf5\uc0ac \uc13c\uc11c\uc785\ub2c8\ub2e4. \uc785\uc0ac\uad11\uc5d0 \uc9c1\uc811 \ubc18\uc751\ud558\ubbc0\ub85c \uc5f4 \uc18c\uc790\uac00 \uac00\uc5f4\ub420 \ub54c\uae4c\uc9c0 \uae30\ub2e4\ub9ac\uc9c0 \uc54a\uace0 \uc77c\uc0ac\ub7c9\uc758 \uae09\uaca9\ud55c \ubcc0\ud654\ub97c \uac10\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc13c\uc11c\uac00 \uc791\uace0 \ubc18\uc751\uc131\uc774 \uc88b\uc73c\uba70 \uc5ec\ub7ec \uc704\uce58\uc5d0 \uc27d\uac8c \ubc30\uce58\ub418\uc5b4\uc57c \ud558\ub294 \uacf3\uc5d0\uc11c \uc774 \uae30\uc220\uc744 \uc720\uc6a9\ud558\uac8c \ub9cc\ub4ed\ub2c8\ub2e4.<\/p>\n\n\n\n
The trade-off is that the detector has a more selective spectral response. For a simple monitoring system, this may not be a major issue, but it becomes important when the measured value needs to represent broadband solar irradiance under different weather or spectral conditions. In those cases, the sensor\u2019s actual spectral characteristics and calibration should be checked before making a purchasing decision.<\/p>\n\n\n\n
\ub2e8\uc810\uc740 \uac80\ucd9c\uae30\uc758 \ubd84\uad11 \uc751\ub2f5\uc774 \ub354 \uc120\ud0dd\uc801\uc774\ub77c\ub294 \uc810\uc785\ub2c8\ub2e4. \ub2e8\uc21c\ud55c \ubaa8\ub2c8\ud130\ub9c1 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 \uc774\uac83\uc774 \ud070 \ubb38\uc81c\uac00 \uc544\ub2d0 \uc218 \uc788\uc9c0\ub9cc, \uce21\uc815\uac12\uc774 \ub2e4\uc591\ud55c \uae30\uc0c1 \ub610\ub294 \ubd84\uad11 \uc870\uac74\uc5d0\uc11c \uad11\ub300\uc5ed \ud0dc\uc591 \uc77c\uc0ac\ub7c9\uc744 \ub098\ud0c0\ub0b4\uc57c \ud560 \ub54c\ub294 \uc911\uc694\ud574\uc9d1\ub2c8\ub2e4. \uadf8\ub7ec\ud55c \uacbd\uc6b0\uc5d0\ub294 \uad6c\ub9e4 \uacb0\uc815\uc744 \ub0b4\ub9ac\uae30 \uc804\uc5d0 \uc13c\uc11c\uc758 \uc2e4\uc81c \ubd84\uad11 \ud2b9\uc131\uacfc \uad50\uc815 \uc0c1\ud0dc\ub97c \ud655\uc778\ud574\uc57c \ud569\ub2c8\ub2e4.<\/h3>\n\n\n\n Why Spectral Response Matters?.<\/p>\n\n\n\n
\ubd84\uad11 \uc751\ub2f5\uc774 \uc911\uc694\ud55c \uc774\uc720\ub294 \ubb34\uc5c7\uc778\uac00?.<\/p>\n\n\n\n
Sunlight reaching a sensor is not spectrally constant. Solar elevation, air mass, cloud cover, atmospheric moisture, and aerosols can all change the distribution of wavelengths reaching the ground. Since thermopile and silicon detectors respond to these wavelengths differently, two properly calibrated sensors can produce different irradiance readings under the same outdoor conditions.<\/h3>\n\n\n\n \uc13c\uc11c\uc5d0 \ub3c4\ub2ec\ud558\ub294 \ud587\ube5b\uc740 \ubd84\uad11\uc801\uc73c\ub85c \uc77c\uc815\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ud0dc\uc591 \uace0\ub3c4, \ub300\uae30 \uc9c8\ub7c9, \uad6c\ub984\ub7c9, \ub300\uae30 \uc911 \uc218\ubd84, \uc5d0\uc5b4\ub85c\uc878\uc740 \ubaa8\ub450 \uc9c0\ud45c\uc5d0 \ub3c4\ub2ec\ud558\ub294 \ud30c\uc7a5 \ubd84\ud3ec\ub97c \ubcc0\ud654\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5f4\uc804\ud1f4\uc640 \uc2e4\ub9ac\ucf58 \uac80\ucd9c\uae30\ub294 \uc774\ub7ec\ud55c \ud30c\uc7a5\uc5d0 \ub2e4\ub974\uac8c \ubc18\uc751\ud558\ubbc0\ub85c, \uc801\uc808\ud788 \uad50\uc815\ub41c \ub450 \uc13c\uc11c\ub3c4 \ub3d9\uc77c\ud55c \uc57c\uc678 \uc870\uac74\uc5d0\uc11c \uc11c\ub85c \ub2e4\ub978 \uc77c\uc0ac\ub7c9 \ud310\ub3c5\uac12\uc744 \uc0dd\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
This is why spectral response should be considered together with accuracy, calibration, and application requirements when selecting a pyranometer.<\/p>\n\n\n\n\n\uc774\uac83\uc774 \uc77c\uc0ac\uacc4\ub97c \uc120\ud0dd\ud560 \ub54c \ubd84\uad11 \uc751\ub2f5\uc744 \uc815\ud655\ub3c4, \uad50\uc815 \ubc0f \uc801\uc6a9 \uc694\uad6c\uc0ac\ud56d\uacfc \ud568\uaed8 \uace0\ub824\ud574\uc57c \ud558\ub294 \uc774\uc720\uc785\ub2c8\ub2e4.<\/h2>\n\n\n\n How Thermopile and Silicon Sensors Differ Spectrally?.<\/p>\n\n\n\n
\uc5f4\uc804\ud1f4\uc640 \uc2e4\ub9ac\ucf58 \uc13c\uc11c\ub294 \ubd84\uad11\uc801\uc73c\ub85c \uc5b4\ub5bb\uac8c \ub2e4\ub978\uac00?.<\/p>\n\n\n\n
What Should You Check on the Datasheet?<\/h3>\n\n\n\n\ub9e4\uac1c\ubcc0\uc218<\/td> What to Look For<\/td><\/tr> \ubd84\uad11 \uc751\ub2f5<\/td> Check whether the wavelength range matches the radiation you actually need to measure.<\/td><\/tr> Accuracy \/ performance class<\/td> Compare the stated performance class or measurement accuracy rather than relying on detector type.<\/td><\/tr> \ucf54\uc0ac\uc778 \uc751\ub2f5<\/td> Important for outdoor measurements because the angle of incoming sunlight changes throughout the day.<\/td><\/tr> Temperature dependence<\/td> Shows how much the sensor output may change as the installation temperature varies.<\/td><\/tr> \uc5f0\uac04 \uc548\uc815\uc131<\/td> Useful for evaluating whether the sensor can maintain consistent readings during long-term deployment.<\/td><\/tr> \uc751\ub2f5 \uc2dc\uac04<\/td> Worth checking when the system needs to capture rapid changes caused by moving clouds or changing irradiance.<\/td><\/tr> \uad50\uc815<\/td> Check the calibration method, certificate, and available measurement traceability before purchasing.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\nWhich Pyranometer Is Better for Solar PV?<\/h2>\n\n\n\n For a PV project, the right pyranometer depends on what the irradiance data is expected to do. A sensor used to assess solar resources or support performance testing has different requirements from one installed at dozens of monitoring points around a plant. So the choice should start with the measurement task, not with the sensor name.<\/p>\n\n\n\nPV Requirement<\/td> Recommended Direction<\/td><\/tr> \ud0dc\uc591\uad11 \uc790\uc6d0 \ud3c9\uac00<\/td> \uc5f4\uc804\ub354\ubbf8<\/td><\/tr> Broadband reference measurement<\/td> \uc5f4\uc804\ub354\ubbf8<\/td><\/tr> Long-term irradiance records<\/td> \uc5f4\uc804\ub354\ubbf8<\/td><\/tr> Distributed monitoring points<\/td> Silicon can be practical<\/td><\/tr> Rapid irradiance changes<\/td> Silicon<\/td><\/tr> \uc18c\ud615 \uae30\uc0c1 \uad00\uce21\uc18c<\/td> Silicon or compact thermopile<\/td><\/tr> PV performance measurement<\/td> Choose according to the required standard and performance class<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\nWhen Thermopile Makes More Sense for PV?<\/h3>\n\n\n\n If irradiance data will be used as a reference for evaluating the solar resource or the performance of a PV system, a thermopile pyranometer is often the safer starting point. Its broad spectral response makes it suitable for measurements where the goal is to characterize incoming solar radiation rather than simply detect changes in light intensity. This is particularly relevant to long-term monitoring and higher-quality performance measurements.<\/p>\n\n\n\n
The sensor still needs to be selected against the project’s actual requirements. Performance class, cosine response, temperature dependence, calibration, installation angle, and maintenance conditions can all affect the final data. Paying more for a thermopile does not automatically solve these issues.<\/p>\n\n\n\n
When Silicon Can Be a Practical Choice?<\/h3>\n\n\n\n Silicon pyranometers can make more sense when the monitoring system needs a large number of sensors and the priority is quick response, compact installation, or keeping the cost of each measuring point under control. They are suitable for many routine PV monitoring applications, provided that the detector’s spectral characteristics and calibration are appropriate for the intended use.<\/p>\n\n\n\n
For a purchasing team, this distinction is useful: if the sensor is part of the measurement reference, focus on measurement performance first; if it is one of many distributed monitoring points, response, integration, power consumption, and cost may become more important. The final selection should be based on the role of the sensor in the PV system and the specifications required by the project.<\/p>\n\n\n\n\nThermopile Pyranometer or Silicon Pyranometer: What Should Buyers Check?<\/h2>\n\n\n\n Choosing between a thermopile and silicon pyranometer should start with the project requirements rather than the detector type. Before requesting a quotation, buyers should confirm what needs to be measured, the required data quality, the installation environment, and how the sensor will connect to the existing monitoring system.<\/p>\n\n\n\n
What Are You Actually Measuring?<\/h3>\n\n\n\n Define the measurement target first: global irradiance, plane-of-array (POA), UV, PAR, or another radiation quantity. For PV projects, also clarify whether the sensor is for routine monitoring, performance assessment, or reference measurement, because each application can have different requirements for spectral response and measurement performance.<\/p>\n\n\n\n
What Measurement Performance Is Required?<\/h3>\n\n\n\n Do not judge a pyranometer by the stated accuracy alone. Check the performance class, spectral response, cosine response, temperature dependence, annual stability, and calibration information together, especially if the data will be used for testing, reporting, or long-term performance analysis.<\/p>\n\n\n\n
How Quickly Must the Sensor Respond?<\/h3>\n\n\n\n Response time becomes important when the system needs to capture rapid irradiance changes, such as those caused by moving clouds. If the application mainly tracks longer-term solar trends, an extremely fast response may offer little practical benefit, so define the required sampling and monitoring frequency first.<\/p>\n\n\n\n
Where Will the Sensor Be Installed?<\/h3>\n\n\n\n Consider the actual outdoor conditions, including temperature, humidity, rain, dust, snow, mounting angle, and maintenance access. Operating temperature, IP rating, cable configuration, and cleaning requirements are worth checking before purchase, particularly for sensors that will remain outdoors for years.<\/p>\n\n\n\n
How Will the Sensor Connect to Your System?<\/h3>\n\n\n\n Confirm the available RS485\/Modbus, analog output, supply voltage, cable, connector, and data logger compatibility before ordering. A sensor can meet the measurement requirements but still create integration problems if its communication interface or power requirements do not match the existing monitoring system.<\/p>\n\n\n\n
Yantai Sensor Solar Radiation Sensor Options<\/h2>\n\n\n\n Yantai Sensor provides different solar radiation measurement options depending on whether the project requires a standalone pyranometer, integrated weather monitoring, or automated solar radiation measurement.<\/p>\n\n\n
![\"TBQ-2C](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/07\/TBQ-2C-Pyranometer-Solar-Radiation-Sensor.webp\")
<\/figure>\n\n\n\n![\"\ud53c\ub77c\ub178\ubbf8\ud130\"](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/03\/pyranometer-4.webp\")
<\/figure>\n\n\n\n![\"\ud30c\uc774\ub77c\ub178\ubbf8\ud130](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/04\/Pyranometer-Installation-Guide.webp\")
<\/figure>\n<\/figure>\n\n\n\n![\"\ubb34\uc120](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/06\/solar-powered-weather-station-18.webp\")
<\/figure>\n\n\n\n![\"\ud0dc\uc591\uad11](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/06\/solar-powered-weather-station-17.webp\")
<\/figure>\n\n\n\n![\"\ud0dc\uc591\uad11](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/06\/solar-powered-weather-station-14.webp\")
<\/figure>\n<\/figure>\n\n\n\n![\"\ud53c\ub77c\ub178\ubbf8\ud130\"](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/04\/TBQ-2C-Solar-Radiation-Sensors-Pyranometers-edited.webp\")
![\"TBQ-2C](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2025\/12\/Solar-Radiation-Sensors-Pyranometers-4-1024x768.webp\")
<\/figure>\n\n\n\n![\"TBQ-2C](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2025\/12\/Solar-Radiation-Sensors-Pyranometers-8-1024x768.webp\")
<\/figure>\n<\/figure>\n\n\n\n![\"\ub18d\uc5c5](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/03\/pyranometer-14.webp\")
<\/figure>\n\n\n\n![\"\uae30\uc0c1](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/03\/pyranometer-12.webp\")
<\/figure>\n<\/figure>\n\n\n\n![\"\ud0dc\uc591\uad11](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2025\/12\/Solar-PV-Industry-Solutions-11.webp\")
<\/figure>\n\n\n\n![\"\ud0dc\uc591\uad11](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2025\/12\/Solar-PV-Industry-Solutions-12.webp\")
<\/figure>\n\n\n\n![\"\ud0dc\uc591\uad11](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2025\/11\/Solar-PV-Industry-1024x671.webp\")
<\/figure>\n<\/figure>\n\n\n\n![\"\ud0dc\uc591\uad11](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/05\/PV-Module-Soiling-Loss-Monitoring-1024x683.webp\")
<\/figure>\n\n\n\n![\"\ud5c8\ubca0\uc774](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2026\/03\/Environmental-Monitoring-Station-Supporting-PV-Power-Forecasting-in-Hebei-Distributed-Solar-Project-1024x698.webp\")
<\/figure>\n\n\n\n![\"\ud0dc\uc591\uad11](\"https:\/\/www.yantaisensor.com\/wp-content\/uploads\/2025\/12\/Solar-PV-Industry-Solutions-4.webp\")
<\/figure>\n<\/figure>\n\n\n\n